Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb0528541825206…

MALICIOUS

PDF

82.2 KB Created: 2021-10-10 03:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: fa39de18979d01447008e2420fbf4e79 SHA-1: 3e8b81af9ff8f45f41da6d28a242dbbbfabe6a81 SHA-256: 8eb0528541825206e988780a86eed1de98ad64e63cc701bdb38632584762475d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract traffic. The presence of a 'manhunt 2 game download for android' UTM term suggests a lure to trick users into clicking on these links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://smidgel.ru/uplcv?utm_term=manhunt+2+game+download+for+android PDF link annotation
    • http://charmingcurls.se/upload/file/xujexe.pdfIn PDF document text
    • http://halanmilk.com/upload/files/89935251541.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/jogedi.pdfIn macro / runtime command snippet
    • http://canoeing.by/pics/files/22899224922.pdfIn macro / runtime command snippet
    • http://kpotplace.com/uploads/files/72186129225.pdfIn PDF document text
    • https://asiapharma.la/files/files/nesabuzepul.pdfIn PDF document text
    • http://islaminkiel.de/webmisr/uploadwebmisr/file/1379782970.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210902131143124.pdfIn PDF document text
    • http://productinfo.in/konadnew/userfiles/file/25273262879.pdfIn PDF document text
    • http://colorsoftexas.com/ckfinder/userfiles/uploads/vipejolosofafikexifufo.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/pukalatiko.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/apmsi8b8n1t0lrjgmm1855pnfr/54620947445.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1614bd02004e93---55376668538.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/70576346842.pdfIn PDF document text
    • https://wroclawmodelshow.pl/ckfinder/userfiles/files/fekidu.pdfIn PDF document text
    • http://boldino-hotel.com/ckfinder/userfiles/files/88077576858.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/61611688347.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/divudikopakalabaxobakopo.pdfIn PDF document text
    • https://nurea.se/currency/userfiles/file/lozowosivonafibotojawisiv.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/1615e8f416cf48---46363761005.pdfIn PDF document text
    • https://insinkerator.us/images/uploaded/file/jabumixumemofirabuvidusi.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/a132d186033df263ecc566813096f6b1/fikorilumesogugezar.pdfIn PDF document text
    • http://squarcialupirelaxinchianti.com/writable/public/userfiles/file/wulizuwidetikulid.pdfIn PDF document text
    • https://jamurgoreng.net/contents/files/78468571207.pdfIn PDF document text
    • https://cakkue.com/contents/files/30819694999.pdfIn PDF document text
    • http://halanmilk.com/upload/In macro / runtime command snippet
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD61 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF573 17428 bytes
SHA-256: 5ec72fabc88bf4bfeb78f5423473753913b30a66141b906e2bb3e65bd9f80665
font_02_sfnt_off0001223e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223E 10932 bytes
SHA-256: 8ebd420d728352984ee44d3199c9e42e7724528bed8bc28d53f15aa86fe37cea

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