Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8848ba9ef25a10…

MALICIOUS

PDF

86.5 KB Created: 2016-12-27 03:12:33 +08:00 First seen: 2018-10-07
MD5: 52319dc0341483cc217cc82e19fbf9e2 SHA-1: 6b1c0b3af0143953bfbf82ab478d6e11c558300c SHA-256: ba8848ba9ef25a107141faac8c697faaa924047355013559c9195535e537a41a
74 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains multiple embedded URLs pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The presence of a 'Visible LOLBin command execution instruction' heuristic indicates that the document likely contains or attempts to execute commands using Windows scripting tools, such as PowerShell, to facilitate the download and execution of a second-stage payload. The document body was not parsable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0405

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://dubaipropertyrentals.net/organizefree/carrydetermine.php/xmhQQvomoGxdJhlexiw16217470xQ.pdf PDF link annotation
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/GcabhhehhJP16258844wrn.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/JJYJvdcQ_idmuPY16258590_c.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/JsmdYuvkwJknumrmikxmrzmdnQ_u16217645dxd.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/cvm_sm_zfbe16218034d.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/PJf16217385G.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/vxxzPi16217309mPx.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/osevmxPYfGbeJeaiGQrPwsh16217451ta.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/a_o16244920alul.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/lzznYbcQthQGoPsuQdcr16217200i_.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/btQesJuPowJ16217574G.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/szlliGQto16218086Yifz.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/tQlQsl_aosaioJxtshYcade16217583wciv.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/rGhlhhmuJGiJJ_teQrdeomP_16258808nlo.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/ldkvcQtxtzumh16258712te.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/hltchutaedraut16217461Yww.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/uPePdxsPmiQfbcfYPruQGaQa16217325shsw.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/kfccscvzubm16258731nol.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/vh_cGkcs16217424Y.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/odnraanu_oiGxcshQk_PdY16244808em.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/ielx16218179vbw.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/PGhs_szzk_tuPJvdbfchlJYtfel16218003rnc.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/lwioJvkenndtGwJ16258681cYsi.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/Q_vvPYQvakwxaabQrom16244939ubz.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/fw_sPYv_xfxbYbP_nYvlmc16258687tPmr.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/ntdG16217600P_.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/hnPidtmYbnYkuvsJGeQtxhe_mhu16217733nsf.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/muneecnz16217492xnvo.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/vYcJ_sJkQroGPmeaY16217688hxzP.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/lJtwsdiuhv16258632omP.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/bGdrG_bl_uvvrueYfrxGYhlnxQw16217568ubc.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/tzmP_xamwncothbmchi_zhvrfdQv16258649sfYY.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/sJYovzuwtfez_xQJtzbQsw16218080Ghz.pdfIn PDF document text
    • http://www.toledano.fr/media/onsdm_k15871178ssxw.pdfIn PDF document text
    • http://www.toledano.fr/media/mviPcuwl15934389mioG.pdfIn PDF document text
    • http://pdmi.ca/manual/hGPdbet_rk13127187idvY.pdfIn PDF document text
    • http://urologist-doctor-india.com/about/Gd_sz_wsYQfew_dkfu14426351vtYd.pdfIn PDF document text
    • http://www.stripvip.com/wp-content/rraQJGwe_hxssunPlsikekkYuors11157115oGn.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/ucefss_dvGciY16258725u.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/lbeaoPJcmsYkYQQzdJtiGmf16217415td.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/vcvmtzxQwlxtPlJfu_u_rn16244821t.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/_iPf16217585QzPi.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/ePJnQtkmQfePGenk16217565haQx.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/JaG_dthtd_JGaliYQ_xrk16217650G.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/fdarkdPztJ16217340ddJ.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/_aorrf_16258752_.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/bccJok16218103Gcu.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/hioYQvxPQitxllGQnorYfYQhne16244925ll.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/kaQvGndwt__dfv_JlP16217468e.pdfIn PDF document text
    • http://dubaipropertyrentals.net/organizefree/carrydetermine.php/PQhdlYaevt_JnnrlziiPilft_b16218101so.pdfIn PDF document text
    +27 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000b312.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB312 20012 bytes
SHA-256: e79fcb4f2e8cbb18756f03b7f04ad80843ebcddce34d2fce1e37cfbdbc307f8b
font_01_sfnt_off0000e916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE916 19964 bytes
SHA-256: 5154a7c8cf7a9b55c2f939ad6a4a8f8327cd6552b9f68a87c49d10dfc747eaa8
font_02_sfnt_off00011ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED9 20828 bytes
SHA-256: 66ee5a421be874c2bf64758e212dcdc74f7e5fbd5b562db26553446e87a084f1