Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec84efb53594fc8…

MALICIOUS

PDF

66.6 KB Created: 2020-12-15 19:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 6c76176c6ed951fec80eff82924ae4ec SHA-1: 81195304e4804be5918957dff88323e2eded8575 SHA-256: 3ec84efb53594fc8b9096a3fb5e73ad6a4716191be1ea7aa95d3250a630261bc
154 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or malicious content distribution scheme. The presence of a large number of external links, including one pointing to 'traffnew.ru', suggests an attempt to redirect users to potentially harmful websites. The ML classifier and ClamAV detection further support its malicious nature, indicating it may be a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6539

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://traffnew.ru/aws?utm_term=afirewall+call+and+sms+blocker+apk PDF link annotation
    • https://mezuxanivatanid.weebly.com/uploads/1/3/4/4/134499991/rujolenogiliril.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372087/normal_5f9458a6b1ea3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bfac05-13e0-479f-8bb2-8035c65d9c3d/xuparexogemajirogew.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc117cc3398ff75152f2ade/t/5fcfc02859fb18758d2d1540/1607450664307/coalition_multiplayer_fps_pc_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffcc36609fd0ee78c2f31/t/5fc0e6ef145a8629dcd213c0/1606477555701/53631361642.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0406b474932ca2689901/1606222855210/wash_by_william_faulkner_characters.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc512818ef7301f8b2bd9f2/t/5fccdd17c836a917f90c0ab5/1607261464505/webtoon_promo_codes_april_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79caa48c1673e559ddea1/t/5fd6a9e9e5ac5828962d5eea/1607903722863/88556123654.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/gummy_drop_hacks_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc526639955c744b556fee0/t/5fca062b196a600d3c374c58/1607075372095/learn_c_online_with_certification_free.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC275 5292 bytes
SHA-256: 8ae2d69160e17094a8e9b19e72aeecd69476a32bf4e5db6bbd091063a883c652
font_01_sfnt_off0000d455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD455 11860 bytes
SHA-256: 10c630455acc6a47e2a707c63f742cfa2b616232ea7bd2478d1dd73c4a2f64ab

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