Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c28a583c2b7f7b6…

MALICIOUS

PDF

69.2 KB Created: 2020-12-02 19:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fbb51fde54b3a42547eafa685f05b06c SHA-1: 2c6f9b20bf048cdd3ce187f393296b3fb4bd640c SHA-256: 6c28a583c2b7f7b632617895e275df0e304cb827f50ccaf0c616268256baec2e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'traffking.ru', which is likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of the URL and the high confidence detection suggest a phishing or credential harvesting attempt.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/123?utm_term=kotor+soldier+build PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377112/normal_5fae1e08b61bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370785/normal_5f93c915001dd.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/5fc0d49a16f6d44b07be6b5d/t/5fc37f29173fb5383b101c8d/1606647594533/warrior_of_the_west_bow_nioh_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc128c411f6a419848742fc/t/5fc469b84e98326c029ef35d/1606707641057/66456207213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f407e81c-fb2a-453c-bc8b-ada083d8665d/3.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc18419cb3e0f57718982c8/1606517787540/who_says_always_in_harry_potter.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf688408845d092482d5cd/1606379652411/new_dodge_dakota_2022.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc130cd8787e879896ddc20/t/5fc526d2f8cdb769c688c967/1606756051900/prozac_nation.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf699bbc819f1cf4d0e948/1606379964167/77391173179.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98ff06c4-12fd-4203-b4ee-79e8f6acf418/the_electrical_engineers_guide_to_passing_the_power_pe_exam.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfda3eaf37e3b6461f3c5/1606286757812/zilesis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57b2d6609fd0ee7b07d3c/t/5fc65563f8cdb769c6bb8c82/1606833508344/pc_building_sim_diagnose_and_fix.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_off0000ce8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8C 4716 bytes
SHA-256: 5d0370ece2c729bddf85d11f2eb97d6a25636bb4a4648e1faf04bd4ad980130e
font_01_sfnt_off0000dea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA2 12820 bytes
SHA-256: 77aadf2c62fee8045eba4a4a864a24531eac15dc89aa3f4f68d7d7d49697bab2

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