Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f8f08f17c402380…

MALICIOUS

PDF

61.6 KB Created: 2021-01-04 03:06:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 942d6d063692e8774c9c2f4c75cb2d2e SHA-1: e8a437e4cb89bfa1c84b78c8b96ba97ae91d200d SHA-256: 0f8f08f17c40238070b2fcf3627fab51fc75fc2e8cd6b3fc1f9b6e3906b3c245
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/123?utm_term=advantages+and+disadvantages+of+sbi+life+insurance'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. The document body, though partially corrupted, suggests a lure related to SBI life insurance, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=advantages+and+disadvantages+of+sbi+life+insurance In PDF document text
    • https://cdn.sqhk.co/moranunemuk/njjpigO/atlantic_undersea_cable_map.pdfIn PDF document text
    • https://cdn.sqhk.co/fasixazijaz/Fjghe1p/41124395761.pdfIn PDF document text
    • https://cdn.sqhk.co/mewuwemiromi/d9ynRid/zoregofaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5f9a1843293ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483602/normal_5fe01424d4415.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/KqRjjid/mazuzipugegimumewesi.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/7128ecbf-fbd3-43ee-912f-bfcee8183718/65037440567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26dbd58-c840-486a-a7a4-56b993fd32d3/free_2nd_grade_online_reading_activities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d15be64-8820-414a-b095-725271187af9/best_driving_simulator_games_xbox_one.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f1b5d7-05ef-4444-aedf-55700005cdcb/unix_network_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eba1fe2e-e3e1-4546-a37f-b0f808e4521a/7496165487.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_off0000b742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB742 5380 bytes
SHA-256: 8fd9c049092726c5796bb6d80ceb4967b10f32749307fc94bbfb93a52e496e2a
font_01_sfnt_off0000c9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A7 9332 bytes
SHA-256: ef8eef79c840da3327d9e98fdc472702cd51a530057dbadb41998b2c90f8de77

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