Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa1bf94923dc147…

MALICIOUS

PDF

71.2 KB Created: 2020-11-20 21:02:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 52949bbb5948c88434b0a44307fa0619 SHA-1: 4d5d4be238df235a78f6d3adc327b6c7a33a68ab SHA-256: baa1bf94923dc147164c1c78b29cc4b41c9326f0a57c5816582500eca0b500c5
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'traffmen.ru', a known malicious domain. ClamAV also detected this file as Pdf.Phishing.Trojan. The ML classifier strongly indicated maliciousness. The embedded content, though heavily obfuscated, likely serves to lure the user into clicking the malicious link, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?utm_term=the+soulmate+secret+book+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418368/normal_5faa25304a661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_5f91a5781ba6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f9296f92be12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414873/normal_5f9efcf6de0cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476427/normal_5fb5b58b48b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_5f9a211cbb3aa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/formal_wear_plus_size_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/dragon_ball_idle_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/agenda_2030_del_desarrollo_sostenible.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/sidivifik.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/asian_countries_and_capitals_list.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/97117165645.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_off0000d7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F5 5640 bytes
SHA-256: aac67ca6346159a0738a88dba2dafc45a53fe2372420d879b251fe72fcd24a26
font_01_sfnt_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 10840 bytes
SHA-256: cd8e395d461102b9fe1e3dae308d8eed8e3bc2134ac45cb56a4c2b8608f06954

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