Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01d50ac550ff156…

MALICIOUS

PDF

92.8 KB Created: 2021-05-19 22:56:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c32047b1e14f1cf09e85bd51f7754a7 SHA-1: 236295f4c12c9e0bbec471e3c221ada1d4cf5c7e SHA-256: b01d50ac550ff156061dad659b73f40350cbd095414be5d5599b0e8706bf7168
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly-hosted PDF files, suggesting a link farm or redirection mechanism. The primary URL, 'https://kuzutuzo.ru/strik?utm_term=mission+mangal+full+movie+online+free+tamilrockers', combined with the heuristic 'PDF_SEO_LINK_FARM', indicates a lure to trick users into visiting potentially malicious sites or downloading further payloads. ClamAV detection and ML classification strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/strik?utm_term=mission+mangal+full+movie+online+free+tamilrockers
    • https://wulodegekejiwa.weebly.com/uploads/1/3/4/2/134266030/7444752.pdf
    • https://vipugexisixow.weebly.com/uploads/1/3/0/7/130775501/luwaxigojixek-zewutirafasa-jipove-fotezujuj.pdf
    • https://ranezilipevag.weebly.com/uploads/1/3/5/3/135392607/zizeten_vinorotukile_detewikodexili.pdf
    • https://gidakilubokaz.weebly.com/uploads/1/3/4/6/134607675/gelil.pdf
    • https://static.s123-cdn-static.com/uploads/4485440/normal_5fe06f0091647.pdf
    • https://static.s123-cdn-static.com/uploads/4381551/normal_5feeed3087d10.pdf
    • https://latuzeke.weebly.com/uploads/1/3/4/8/134884471/ded231968.pdf
    • https://kiwakobomu.weebly.com/uploads/1/3/1/4/131482833/vezowi.pdf
    • https://golotarati.weebly.com/uploads/1/3/1/8/131856611/nalege_sezepopar_ruvufesogopifu.pdf
    • https://ruwaxejitoxa.weebly.com/uploads/1/3/4/9/134902813/zetuvobefodopidewe.pdf
    • https://xifasojole.weebly.com/uploads/1/3/0/8/130873801/vofilijebo-vimapekedo-nalurefurix-gezefadake.pdf
    • https://pokifuduxorimib.weebly.com/uploads/1/3/4/5/134501468/pipepe.pdf
    • https://metasabuvaro.weebly.com/uploads/1/3/2/6/132681671/487320.pdf
    • https://cdn-cms.f-static.net/uploads/4477623/normal_5fd2aaeee3155.pdf
    • https://kinumefiboposif.weebly.com/uploads/1/3/4/8/134865532/2310c01cd0e318.pdf
    • https://jorojesa.weebly.com/uploads/1/3/4/8/134861508/6295044.pdf
    • https://wunanowadile.weebly.com/uploads/1/3/4/6/134600652/4960223.pdf
    • https://vukexelisijaka.weebly.com/uploads/1/3/1/0/131070195/xowonibinejexoxeje.pdf
    • https://gizazegixewaner.weebly.com/uploads/1/3/4/5/134596748/4472647.pdf
    • https://kawuruli.weebly.com/uploads/1/3/0/8/130814241/ec3b3bb45a154ba.pdf
    • https://zagamujibagixon.weebly.com/uploads/1/3/5/3/135326067/87a5b59a.pdf
    • https://bufotikebejunut.weebly.com/uploads/1/3/1/3/131398235/6a3fe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f838.bin
b1255ea4b3b70d3e2926eef48e4193f2908a14f04484bb54c6d2b2a9c09ba5e2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF838 5332 bytes
font_01_sfnt_off00010a58.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A58 3720 bytes
font_02_sfnt_off000115bb.bin
9285983574efcd8ef807872a2d5373aa52f7c5ee46253efcbd0c8dbf3c7f618f
pdf-font-stream PDF embedded font (sfnt) at offset 0x115BB 10884 bytes
font_03_sfnt_off00013b2b.bin
724300c3595797041fca0f48d6e8c387f78d8b0c3e879da53c587f62df4a42a3
pdf-font-stream PDF embedded font (sfnt) at offset 0x13B2B 14092 bytes