Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39d945419dfb466…

MALICIOUS

PDF

73.4 KB Created: 2020-12-25 19:33:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b732de637e43e8d7a427daf6f8b4fb26 SHA-1: 90e92cd8e8bf2d8a80b9577c53fc661e373e0bd3 SHA-256: c39d945419dfb4665f5d80e002f1f7dd5ace7af33d90ef950d4b414652612a07
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 detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely used to host a phishing page or download a secondary payload. The document body, though heavily obfuscated, contains references to 'Star wars dark force rising book' and 'wkhtmltopdf', suggesting a lure to trick users into clicking the malicious link.

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
  • 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=star+wars+dark+force+rising+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460476/normal_5fad66badab92.pdfIn PDF document text
    • https://cdn.sqhk.co/xakawituk/gibmXig/nike_bomber_jacket_men_s_black.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/5929958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_5fbfe440d67d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5fd12e9f61f4e.pdfIn PDF document text
    • https://xipurewaxo.weebly.com/uploads/1/3/4/7/134759043/4686374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380405/normal_5fd2adb7bd30e.pdfIn PDF document text
    • https://tiwidugeges.weebly.com/uploads/1/3/4/6/134635585/9208634.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/cV8gjty/claw_machine_arcade_games_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445331/normal_5fe5628881217.pdfIn PDF document text
    • https://fenivubad.weebly.com/uploads/1/3/4/4/134482284/6673978243203d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419846/normal_5fc622a036dfc.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/bajiegj/new_english_songs_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/gbjF3ic/95145892472.pdfIn PDF document text
    • https://cdn.sqhk.co/forokuxodel/RPZ9k4O/relarozezupane.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE296 5556 bytes
SHA-256: 3f48ce7657e5ccfa83e65455b899b2b273706ba7c7b3777fbd0a8a91484572c8
font_01_sfnt_off0000f5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A9 10376 bytes
SHA-256: bfc99ba2e84bfc3fc51150a16eb7813995da7691f4211a02e6f549d2e3ecd01d

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