Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04da18ece97832e…

MALICIOUS

PDF

65.9 KB Created: 2021-01-07 20:47:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 20142f6fe06de936080fd0afd7b55867 SHA-1: 9c0ff098407a4cf4de377878716fd1e702a8c4e4 SHA-256: f04da18ece97832e3183542ef8967795909187cb2a2706a24e00c718ef8fe6b0
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is disguised with a lure related to Minecraft. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/123?utm_term=minecraft+medieval+castle+book In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369309/normal_5f8acfa381bd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402262/normal_5f99e62ed37f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500186/normal_5fd8b2678cfbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417122/normal_5fb8d21f72d43.pdfIn PDF document text
    • https://cdn.sqhk.co/kipasewimoni/jdhiLhe/jidididajujizutibegi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477863/normal_5fb7691b43ac2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5fcc44685ccd1.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/8ed632b9-2e4f-4ce0-889d-dee41d83f0c9/tekiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f85750c1-bc2b-4684-81a9-055ba13d1bc9/motorcycle_fog_light_bulbs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/241ccbd3-2c3e-4199-b5a6-5c44c14c5101/40840909823.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/70451033439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48dff97f-0890-4c19-b0b6-3fda4ec41bca/vitacost_20_off_promo_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ce48429-627d-4b22-b391-494b92b8bb00/82772226799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f8ba5c-8c48-4bc8-bfca-6c36c2fc3d57/86634869866.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_off0000c58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC58F 5436 bytes
SHA-256: 89f1c8dca783fd152d3a60a13fa5d49503168d8aa225944cc97c7fbe3cb8386c
font_01_sfnt_off0000d80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80B 10468 bytes
SHA-256: c0f177a1627caf51578d4d01af7eed391b6fd895e4164a49167e27ffb1be3b12

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