Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f8ea0c9e3d1f4fb…

MALICIOUS

PDF

71.0 KB Created: 2020-12-23 11:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e53bc001d1253bc086a8d1ef26f94841 SHA-1: 8b8d6898631c783d78f64bd51e79164bfe6c9966 SHA-256: 2f8ea0c9e3d1f4fb8291612a648a1f22231163dd997fa1243d12f1fa60875ba5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://traffine.ru/strik?utm_term=guess+movie+name+by+emoji+with+answers'. The ML classifier also flagged this PDF with a high probability of being malicious. The document body, though partially corrupted, suggests a lure related to a game or quiz, which is a common tactic for phishing or distributing further malware.

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/strik?utm_term=guess+movie+name+by+emoji+with+answers In PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/sakitivezilike.pdfIn PDF document text
    • https://ramokazadi.weebly.com/uploads/1/3/4/4/134470245/faper_serojewoxizo.pdfIn PDF document text
    • https://pejofipapumozok.weebly.com/uploads/1/3/4/4/134493366/3bf27cb634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491665/normal_5fb79f1300884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_5fb4c8417072b.pdfIn PDF document text
    • https://nodararikerat.weebly.com/uploads/1/3/4/8/134885074/memojoroxofe_pexidafugojow_ganenijusigizo_ketasibemovadat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3894c4b9-bed6-4d15-bfba-b133b39847a0/karotatexebu.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/breakthrough_book_joyce_smith.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e881981-190e-4bfd-af75-5371737f3d00/singer_sewing_machine_model_3337_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/vrbo_cushing_island_maine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8b860e-eaf4-4c5e-a9a8-bc4bef7791ee/step_sister_pumpkin_porn.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/7759440198.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_off0000ceae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAE 5396 bytes
SHA-256: efe9549c96e8d181b2e31e571492c66efa8b3a73685c942c4e0424ecdab13ede
font_01_sfnt_off0000e0f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F3 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off0000e981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE981 10780 bytes
SHA-256: e0e2bbf4672c8965caecf1dc5f622eb1f7001eccb5e4ab5b975ab5924ebf0aae

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