Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc11c3ae8db86e8…

MALICIOUS

PDF

70.7 KB Created: 2020-12-27 03:33:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e27def2581718ff4a5961b49e0679e8d SHA-1: eed47abd37a4f5c4f27890b19b88b8fdbe6263ba SHA-256: cfc11c3ae8db86e8149d4864e4e3c7317b941221f8a5948d77b1890d5b48a068
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it's a malicious redirector, linking to a URL that is likely part of a phishing or malware distribution chain. The embedded URL, 'https://ggtraff.ru/aws?utm_term=coordinate+geometry+proofs+worksheet+pdf', is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'coordinate geometry proofs worksheet pdf'.

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://ggtraff.ru/aws?utm_term=coordinate+geometry+proofs+worksheet+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4471235/normal_5fcb57fe4e48e.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/iggpica/lepoxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_5fa86a0b7ffdf.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/EIiiib9/ruwaxuz.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/LQiaHjb/coin_pusher_game_win_real_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489834/normal_5fd29f2f60994.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvidomanale/ibIdGNm/43067240156.pdfIn PDF document text
    • https://cdn.sqhk.co/dagizonu/iibgejj/griselda_blanco_younger.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/1a8f2559-15b3-4590-baf6-d73c9dc95e7d/polaris_sltx_1050_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1b3e8d-13ae-4f6f-9870-efa5abdfe7bf/93645311834.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44b46ed6-b621-4369-a8c9-d21823393db1/paleo_meal_planning_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc515f3-f06a-422b-8976-64bdf4f876f9/72736403476.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2C 5584 bytes
SHA-256: 271271713c4cf830ec671e34831aea6c8951ab21e614ded6370d30996537c593
font_01_sfnt_off0000e01d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01D 13648 bytes
SHA-256: 1424904c890631f00a919083d9078a8d04c3b568bed4041418a220a6eea0d3dc

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