Malicious PDF — malware analysis report

Static analysis result for SHA-256 1298a215ef383a07…

MALICIOUS

PDF

67.2 KB Created: 2020-11-13 03:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 737c5a8720d9c198bcf2e021cba1cb76 SHA-1: 2cfbef90f9b9abec109df5a9b3ca29c89ff162f1 SHA-256: 1298a215ef383a076996946f80622d664a6e3a5060e99a2ce1f045a6f300b0a1
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 'ggtraff.ru'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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=divinity+original+sin+2+skill+book+v
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f8ae7e97906d.pdf
    • https://cdn-cms.f-static.net/uploads/4393036/normal_5fada74c6ce5d.pdf
    • https://cdn-cms.f-static.net/uploads/4384030/normal_5f8f5b91565d0.pdf
    • https://cdn-cms.f-static.net/uploads/4389805/normal_5f9922725e6a2.pdf
    • https://cdn-cms.f-static.net/uploads/4369632/normal_5fad990464a21.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vavale/89520077634.pdf
    • https://uploads.strikinglycdn.com/files/5f051e74-826e-49c8-9d9b-8ab8de214caf/tamufegagurumigofepoxamis.pdf
    • https://s3.amazonaws.com/ruzaganog/kilugalaraluwaxolowarobu.pdf
    • https://uploads.strikinglycdn.com/files/54a33cd6-6d22-44c4-863e-0ca3cb5f229a/pufumokugomekasa.pdf
    • https://s3.amazonaws.com/nonipesikiri/cooking_fever_pc_cheat_codes.pdf
    • https://uploads.strikinglycdn.com/files/011c045c-83d7-4d39-b4f4-513b0a762c0b/vakunaniwokanek.pdf
    • https://s3.amazonaws.com/fosagoba/easy_violin_and_cello_duets.pdf
    • https://uploads.strikinglycdn.com/files/22409579-f8a3-48f3-a0f5-08a912b92a19/kenmore_elite_washer_manual_drain.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_off0000cb28.bin
4fc0c6778ad12a475e438771d38a7c1166fb2d16ff2a7b8af3869a0e929294b7
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB28 5352 bytes
font_01_sfnt_off0000dd81.bin
a343f068d1807231cd239a0f9286261e0527064315a195be86b0996678e2cbae
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD81 10608 bytes