Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc0f529606f8612…

MALICIOUS

PDF

71.4 KB Created: 2021-01-22 11:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6d9a2fad927310b0b71b59938b38fe41 SHA-1: 85735cd5e2a3c4ab13a60d6bcc5b4aec0aff234f SHA-256: ddc0f529606f8612cd25f0d5fd0bd7202fa526c24496dfc8607fb9280979b1a5
154 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 multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL points to 'traffmen.ru', a known malicious redirector. The document body appears to be corrupted or obfuscated, but the presence of the malicious link strongly suggests a phishing or malware delivery 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
  • 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=dbz+dokkan+battle+pull+simulator In PDF document text
    • https://static.s123-cdn-static.com/uploads/4453719/normal_6006ea50b91db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459469/normal_600542ae826c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447251/normal_5fc8ad9ddb4f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486054/normal_5fd30c40aec2e.pdfIn PDF document text
    • https://cdn.sqhk.co/titabofasika/Pgejejf/tixirifirog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529977/normal_5fdc0f65ea4cd.pdfIn PDF document text
    • https://cdn.sqhk.co/vizinifum/Hggijii/heart_star_symbol_keyboard.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/i7biidy/30340348487.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/RMT1O5z/bow_kingdom_come.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426701/normal_5ff86cef4438a.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/xgdq7C9/43932760343.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/natigovudasenodox.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/dr_babasaheb_ambedkar_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/xujitefebemegukiguporubav.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/anime_tv_series_english_dubbed.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_off0000d840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD840 5360 bytes
SHA-256: 9e188bd75fbd20878eb9b9342eb354c2e506807513b720f0d933db6e5b320c7f
font_01_sfnt_off0000ea68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA68 11188 bytes
SHA-256: d1d4644ed8cc60cf5e7ca3b621189c99c421daddbaac7dbd97fa671a31a2e574

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