Malicious PDF — malware analysis report

Static analysis result for SHA-256 29dd007ff2160247…

MALICIOUS

PDF

70.7 KB Created: 2020-12-22 08:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4488a225324e399dc57443beb6b95b97 SHA-1: 797003ce9acd1210a2e42cb7d41805c70dcd5e89 SHA-256: 29dd007ff21602474d96e5f34f793983d7208411f837a5a92352084118e39d2e
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 'https://gettraff.ru/strik?utm_term=football+coach+appreciation+gifts'. This, combined with a high ML classifier score and ClamAV detection, strongly indicates a malicious intent to lure the user to a harmful site. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

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://gettraff.ru/strik?utm_term=football+coach+appreciation+gifts
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5f947eb316796.pdf
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f8c38e99f2ef.pdf
    • https://static.s123-cdn-static.com/uploads/4377128/normal_5fcbe0ee37ac3.pdf
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f9f03d12cce0.pdf
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5f8f216567b46.pdf
    • https://cdn-cms.f-static.net/uploads/4413119/normal_5f941c43b2d8e.pdf
    • https://cdn-cms.f-static.net/uploads/4422137/normal_5f9b3162bde55.pdf
    • https://cdn-cms.f-static.net/uploads/4410018/normal_5f939556113d6.pdf
    • https://cdn-cms.f-static.net/uploads/4369336/normal_5f9b8503300ec.pdf
    • https://cdn-cms.f-static.net/uploads/4426279/normal_5fd664e7916a1.pdf
    • https://cdn-cms.f-static.net/uploads/4387419/normal_5fbf17df5911c.pdf
    • https://cdn-cms.f-static.net/uploads/4384469/normal_5fb82f1b095bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc546b6a13a450bab114660/t/5fcbd3360814be4f73f3e894/1607193399586/animal_skins_rdr2_online.pdf
    • https://s3.amazonaws.com/zaxawetawupo/soxife.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbfb.bin
4f41634859431d2a30b3bac735d338f4a5128e161686d69135f3255a50f3becd
pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFB 3488 bytes
font_01_sfnt_off0000d883.bin
c2ad41886c00d2f97ff91f699a4e8280de347cec53ee1d37f9ce236a1268c98f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 5372 bytes
font_02_sfnt_off0000eac7.bin
23d4878ba9fe1358f479bdc86b30b0996ac3324da6ea8643f7cd51949abc0d7f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC7 10256 bytes