Malicious PDF — malware analysis report

Static analysis result for SHA-256 60fa288c94a9aced…

MALICIOUS

PDF

69.7 KB Created: 2020-12-01 03:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e46ab738faf85676c737e88ab8e49b SHA-1: 1c020eff4a93eac018620c7739cf1d9d860835e9 SHA-256: 60fa288c94a9acedf2c6d73da8a8f9514041b01d931a0bf8c6ae78c23906daef
152 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it uses an invoice or payment lure, a download button, and a callback phone lure, all pointing towards a phishing or scam attempt. The embedded URL `https://traffine.ru/strik?utm_term=lorain+county+auditor+property+search` is the primary indicator of a malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffine.ru/strik?utm_term=lorain+county+auditor+property+search
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5f94c9608e602.pdf
    • https://cdn-cms.f-static.net/uploads/4412378/normal_5fbf6679c3638.pdf
    • https://cdn-cms.f-static.net/uploads/4383698/normal_5f96252f505e3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/19f54578-5e85-4d2a-894a-19832bc54b65/90602770496.pdf
    • https://s3.amazonaws.com/bajuse/colab_google_sheets.pdf
    • https://s3.amazonaws.com/geradi/business_continuity_management_good_practice_guidelines.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a55f8cdb769c6d8dca0/1606371926541/heating_elements_for_maytag_dryers.pdf
    • https://uploads.strikinglycdn.com/files/1ce3b3d3-beda-424c-abee-44f378144df6/wojitifunawenepo.pdf
    • https://s3.amazonaws.com/retisovojor/33230880074.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf598361e25426e12fdb8b/1606375812088/94815629097.pdf
    • https://s3.amazonaws.com/texifaxepag/legilojamoduk.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0cd1cc750a3b5a085640/1606225107470/unimac_dryer_error_codes.pdf
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfdc.bin
49009716a7d36d9524e015baa14078107f1fc14e7f5e925a6b00e3aeb7afd034		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDC 5172 bytes
font_01_sfnt_off0000e178.bin
ef4d0c2cdeb105db7e142abb8aa980de06481d1fb4998cd8fa4d065ae13ba0bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE178 11520 bytes

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