Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd59118b7b89e071…

MALICIOUS

PDF

73.2 KB Created: 2020-11-14 16:58:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 1822023e398979446b895dde1d8e3178 SHA-1: 751a198fb7acd2a3442d84b7eea687621a48eace SHA-256: bd59118b7b89e071b655035666ba841da7f0828d08170cb7f60da943ed440dbf
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 indicates an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=pioneer+pl-+30-+k+review In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_5f8c1675e9cff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389599/normal_5fae014874773.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5f896a58b401a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378155/normal_5f9cf3394b151.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407327/normal_5f9dadabd87fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f872d1d66a04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448536/normal_5faac656332a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_5f95353041383.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/somamere/33446069312.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/54674267177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/726fc308-1860-4d6c-8dce-4c7327026164/48955368603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a2aa766-1302-48c1-a741-193335a8c991/86141930188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26e8547f-9ac8-47b0-937f-019157097961/vojixubat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 4688 bytes
SHA-256: 8483e1e96e766f08dda11203e1b7536eb86c5f08b21de2f4bd8c23856245ba61
font_01_sfnt_off0000e48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48D 11128 bytes
SHA-256: ce7b435f835347470b2f5886196a0939a75765647f2e818eb10a63e4c69558a7
font_02_sfnt_off00010a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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