Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd212244ed747878…

MALICIOUS

PDF

65.8 KB Created: 2020-11-12 21:38:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6294f719258ecc1bca6a4700fce98c22 SHA-1: d20c46cea7e311f9fe2d77840b0b1ceba8900b6b SHA-256: cd212244ed7478784fd0e57e026852ad94a8796f58d4a779c4bef9710c253702
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is flagged as critical. The ML classifier also strongly indicates maliciousness. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL suggest an attempt to redirect the user to a phishing or malware distribution site, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffmen.ru/aws?utm_term=list+of+worksheet+in+excel
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f9f8de63f8aa.pdf
    • https://cdn-cms.f-static.net/uploads/4483591/normal_5fad24112a93a.pdf
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f91476dc951e.pdf
    • https://cdn-cms.f-static.net/uploads/4389365/normal_5f8e882048a09.pdf
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5f8cb1be9ff0b.pdf
    • https://cdn-cms.f-static.net/uploads/4411480/normal_5f9f2c1b501d8.pdf
    • https://nokemodikobo.weebly.com/uploads/1/3/4/3/134308311/jifalaxufijob.pdf
    • https://cdn-cms.f-static.net/uploads/4370791/normal_5f928b8f613d9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/caf5abba-389b-4b6a-ba5e-a83dded3607d/gurobovafajawowego.pdf
    • https://uploads.strikinglycdn.com/files/ab0d8025-7cb1-4ba9-b210-663339506c0d/south_mountain_community_church_south_jordan.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_off0000c5af.bin
1c21fb484c0f58da45810bbdea9d53085c45c2be6a619b293e52457fe47b3e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 4924 bytes
font_01_sfnt_off0000d68f.bin
ca46a3002571d5979bca3357b19e732a2f35148f9274460f209f9ce5d5b66eb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD68F 10624 bytes

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