Malicious PDF — malware analysis report

Static analysis result for SHA-256 1020da2b8699de5a…

MALICIOUS

PDF

67.0 KB Created: 2020-12-20 00:12:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 282a77e4981dc160516a14aec468a4f5 SHA-1: 8ce7c6ad6e1eb01561da351a226e0ddaff0bf129 SHA-256: 1020da2b8699de5ace6ca852716fa516e97689cf00cdd83ceaab8f41dd896ebd
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=classification+of+costs+with+examples In PDF document text
    • https://cdn-cms.f-static.net/uploads/4468534/normal_5fb7e74e7c8b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469136/normal_5fba00f251c0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416932/normal_5fc876e5c1f89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388065/normal_5fcb4de2da5fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc18b2c68612547ed62b026/t/5fc3042af3de5e49b5c7ac12/1606616107006/36554905784.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/699b99ad-48e6-4266-bfbc-b9f607b324f5/29508928058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d054b146-4957-407d-b151-04690dfac28c/shotokan_karate_stances.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff689955c744b536924c/t/5fc14638173fb5383bd15019/1606501945210/zirujavurufu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc826ac3cfda2dcf0aa550/t/5fdcc742bcde226dbcfee529/1608304450994/21257117114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc7d7f21-8e65-4c8e-9055-9f2f12b8707c/99108653014.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5ffabc819f1cf4d03d5f/1606377466207/61916105046.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36ad6d43-c636-4e64-bfad-6a6db40713db/jokugatizigasagalo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0ea21c30a162e0c52977d/t/5fc1a01561e25426e1755bb6/1606524950569/archer_guide_maplestory.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_off0000cb44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB44 5224 bytes
SHA-256: a27e36a2ef560817ee0ee3d7de9f4da7c549bbba3f01e7eafe807e5c23c46db5
font_01_sfnt_off0000dcf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF8 9888 bytes
SHA-256: b88a195afcc59f510676b28d84efeb069918b2e7688fe8df535c773ae1e1a323

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