Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9a0fe42bd65284…

MALICIOUS

PDF

75.3 KB Created: 2021-01-08 00:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3fee73e055d932172eb48e890a160986 SHA-1: f2921dd0156bf83014034a46074918a94db040b8 SHA-256: cc9a0fe42bd65284f591192cc04a83b8f100492ebc8522a197f45aac2298648f
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://traffine.ru/wb?keyword=hell%20ride%202008%20wiki'. ML classification and ClamAV also flagged this file as malicious. The document body is heavily obfuscated and unreadable, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

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/wb?keyword=hell%20ride%202008%20wiki In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_5f97e32f450e3.pdfIn PDF document text
    • https://damajarulapo.weebly.com/uploads/1/3/0/7/130738748/bipebifaje_lofegadog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383586/normal_5ff29491f30a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_5f906301e5c53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402481/normal_5fd9912678a07.pdfIn PDF document text
    • https://tamegafatukof.weebly.com/uploads/1/3/4/4/134400059/43e84d72c2892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5f9e070cde172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5ff21fa8459f3.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/jajoxulabojaso/basic_html5_form_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7e6297c-0523-4113-80fd-d6b9b4fb8a09/zararovixugo.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/kuzemegobomir.pdfIn PDF document text
    • https://s3.amazonaws.com/mevuzokekenojab/6111252691.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/9.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/cinema_4d_r20_anleitung_deutsch.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_off0000e34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34B 5016 bytes
SHA-256: e3d89d9af2b4452b30b39686bf0e658cd4207468842272fae23a9c24a8197ed5
font_01_sfnt_off0000f47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF47E 14080 bytes
SHA-256: 22e20b16bd9b70f6280cfa92a2750faa6c851e426d5b573e68f43a3a8dd388c9

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