Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3fee46742a33fee…

MALICIOUS

PDF

67.7 KB Created: 2020-12-26 07:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f82f201066cce07b2ca431e5ad0a9091 SHA-1: d4c583a93626d0316a835cd83d89d2161af7574e SHA-256: c3fee46742a33fee39a415e9b9e8d19b120a64c529e27fdedf2f4e63678cdf0c
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'. ML classification and ClamAV also flagged this file as malicious. While no scripts were extracted, the presence of a malicious URL strongly suggests 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 0.9997

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://traffine.ru/123?utm_term=friends+like+me+robin+williams In PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/i4lhbhg/download_mod_zombie_survival_gta_san_andreas_mobile.pdfIn PDF document text
    • https://cdn.sqhk.co/zifalulog/9ibhiia/xavejonezexabemunufolik.pdfIn PDF document text
    • https://cdn.sqhk.co/bebetirifam/TsfWjC4/72940650054.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374189/normal_5f8d64ed3a098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418399/normal_5fc70c6d7a04f.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/wonoti/44633347426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dfd0e2c-afb3-43a1-a655-a5dcd490edfe/61308561470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b20839e-0ef0-4f53-800c-6ecccb5bad50/podom.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/high_school_geometry_review_packet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24f3c93d-a28e-427a-9582-21c96ff32744/tafivutawisegavifurati.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/blue_star_kachina_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c2682a9-1326-45c7-87cd-bf0934297a77/32965139351.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_off0000ccf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF6 5220 bytes
SHA-256: 6069dc217cf5e2debc4adf8703397ea6a0fd105924e65370edc2a3907411ed98
font_01_sfnt_off0000deb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB3 10468 bytes
SHA-256: f4e0ab04e02d2644eec63be6af66fdba40b97526bd46d27b9cd8813ac7bba8ad

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