Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7080dd0710f01b3…

MALICIOUS

PDF

63.2 KB Created: 2020-12-23 08:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9886b06170d62a78cb28d04d39430d3d SHA-1: 58ebfe31981af43c1fa88e6cc99ad82283cad8ce SHA-256: a7080dd0710f01b357c61e47011d50e56e15734c023056bbbb8824a8f79b9352
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While the document body is heavily obfuscated, the presence of a malicious URL suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=zombicide+no+rest+for+the+wicked+reprint
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f908d4a14e3d.pdf
    • https://cdn-cms.f-static.net/uploads/4379371/normal_5f905e1f4e805.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/375d7df9-6b46-4096-98ac-96293b377b83/skyrim_xbox_one_mod_list.pdf
    • https://uploads.strikinglycdn.com/files/e021bcf8-034d-47df-a58b-195f8b53024b/pibagesujaxavolokuke.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49082dd96f5918e4b023/1606371594044/86971707841.pdf
    • https://uploads.strikinglycdn.com/files/a72fc50c-613d-4625-bbd2-a2d57573f45b/47993692507.pdf
    • https://s3.amazonaws.com/lupebesu/encyclopedia_britannica_2012_free.pdf
    • https://uploads.strikinglycdn.com/files/dc017ecc-12e2-4d35-bc84-f2ee8277bb1e/2635652243.pdf
    • https://uploads.strikinglycdn.com/files/3410570b-4fe4-41fb-b248-fa23e21b0d16/great_expectations_quotes_about_pip_changing.pdf
    • https://uploads.strikinglycdn.com/files/bdc7b8a8-c159-4142-ad32-04b104ed07eb/vizio_sb4551-d5_manual.pdf
    • https://uploads.strikinglycdn.com/files/6711fd98-3928-413a-b592-7564a19fba24/90623666912.pdf
    • https://uploads.strikinglycdn.com/files/c8a4de74-0cbc-45a8-beb0-311ee6f9c52d/15948738637.pdf
    • https://s3.amazonaws.com/wewuxuviwar/37444913011.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_off0000b9e1.bin
a9277feca12c63600ffc89c5c151c5fa2fe9df67409082f4a8784a1d46a0ac96
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9E1 5404 bytes
font_01_sfnt_off0000cc2c.bin
31262d8a9eb033c5d7c05a8d843382b116d7427f98fa86ae798e77903388c863
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2C 10680 bytes