Malicious PDF — malware analysis report

Static analysis result for SHA-256 067f9ba1c99fb85c…

MALICIOUS

PDF

68.1 KB Created: 2020-11-18 08:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98c234f8603092de0263f006172c6e34 SHA-1: 1d4cd5b3f3f03b7c871cd9f717ae8a84e15681db SHA-256: 067f9ba1c99fb85c68a10e824ea5d7e7b0bf0facc8ae6418c664afd89a275df7
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://ggtraff.ru/strik?utm_term=exercices+corrig%25C3%25A9s+sur+les+forces+en+physique+3eme+pdf'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://ggtraff.ru/strik?utm_term=exercices+corrig%25C3%25A9s+sur+les+forces+en+physique+3eme+pdf
    • https://cdn-cms.f-static.net/uploads/4411480/normal_5f9dc667d4118.pdf
    • https://cdn-cms.f-static.net/uploads/4388617/normal_5fa495faa79cd.pdf
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5f9772e026f5d.pdf
    • https://cdn-cms.f-static.net/uploads/4380863/normal_5fb382b05c98c.pdf
    • https://cdn-cms.f-static.net/uploads/4381085/normal_5faa7c75a2edb.pdf
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5fae8377985cb.pdf
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5f9828169bf56.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7a663ca3-eacb-4af1-bac9-22dc50c6ed2f/fevew.pdf
    • https://uploads.strikinglycdn.com/files/7188a558-cf09-476a-ae2b-ae7d17fcaa7f/48150874714.pdf
    • https://uploads.strikinglycdn.com/files/ab8144a8-e73a-4f31-9a9b-eb5e07130380/91098045249.pdf
    • https://uploads.strikinglycdn.com/files/3ba5459d-0b56-4e11-8b3f-80f71bc59cdd/satosuzajixuma.pdf
    • https://uploads.strikinglycdn.com/files/73b409d2-d222-4bd6-8dd8-d68a2b87fe85/43176116743.pdf
    • https://uploads.strikinglycdn.com/files/f98d16ab-aace-4f49-bbdd-20983013a5e8/xenosovowotumowuza.pdf
    • https://uploads.strikinglycdn.com/files/6d976ff6-a018-4f39-9106-e5402519d2b2/shaolin_soccer_download_in_tamil.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c770.bin
24af9a469166ca866033a4fa13749a2362e6f53336aca4c9edac8bc48906b4b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC770 5916 bytes
font_01_sfnt_off0000db37.bin
78fe05de3408d990e27c6c5f9a3ad77b315c9a1a404ee7b7d140b67d2087ce6a
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB37 11916 bytes