Malicious PDF — malware analysis report

Static analysis result for SHA-256 b15e291176aba048…

MALICIOUS

PDF

60.8 KB Created: 2020-11-14 09:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c5b30002871c719ec776640ddb86dae3 SHA-1: 43ee289e3c6bd41e719f4c5dbc63431b0a0cf273 SHA-256: b15e291176aba048a22dad0cceb7daea1e63b59ace8db32e832432945de18d95
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 'traffine.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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/123?utm_term=union+city+mi+weather+radar In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421210/normal_5fada8af428de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_5f9acff24c486.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414331/normal_5f988a5f9b211.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393020/normal_5f8f62e4187c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5fa469b09ee37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454547/normal_5faefa029ac71.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/8be620bf-3aff-4043-9e96-2ff430f5a980/lobemakojexodipukewufil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca4e39cd-25e6-4f90-9f51-79092ea97909/sopeluxikosojaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fcd2813-e736-46a2-92bf-00cb7a447178/the_odyssey_answers_and_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a2050ee-104f-44c3-be6e-966cd323bed2/pitutakozava.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/character_of_a_leader.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4cd4f64-5788-49b0-8fff-b8e86cae2233/bomenuxadokenubojiwij.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB507 5156 bytes
SHA-256: bad750008b425e1baf0717eab83713ccc3ea45de93473b2073628e505b5a4014
font_01_sfnt_off0000c67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC67A 9472 bytes
SHA-256: 856258cad06d129061415dba1cff04b95dd730540ef747a1da2fe8f036ed7bc1

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