Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dfd1269d28a05bb…

MALICIOUS

PDF

67.2 KB Created: 2020-11-24 00:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 9a928b426fa778a1756683b1cc63b50a SHA-1: 63d90c609386a052148d490ce8f1f4a8eb6e9650 SHA-256: 0dfd1269d28a05bb8f9fd8e8704423cf8447e620cd8a90b85936fbd420928b92
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, traffmen.ru, which is likely used to deliver a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to downloading a game, aligning with phishing tactics.

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/strik?utm_term=download+pokemon+mega+emerald+x+and+y In PDF document text
    • https://cdn-cms.f-static.net/uploads/4457868/normal_5fb7195040b9d.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/najubu/certainty_equivalent_and_risk_premium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baab222c-0e27-467b-b35c-af24444dee47/toramumiguvedodika.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e96eb89-3859-4b9b-a0c1-97323e65af5b/84204179102.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/89724006981.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3023b302-01f3-49ce-8b5e-c15a421eb447/dopumaxufepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720184ba-b470-446a-aa98-abc06019aa43/sonic_colors_wii_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/pelufel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d8c18bd-f29a-4e05-aa08-88aea3be09cb/93105867631.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/among_the_sleep_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bbbed3d-081b-4d1a-ad33-b0bc1d20a4b7/sovan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/121bff3b-e9a5-47d8-a6fd-c703a486c867/valkyrie_armor_skyrim.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/50747913814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4bd3ea-7242-4975-a7e8-8bb585ef36b4/osu_how_to_stream.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/live_wallpaper_for_android_9.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/51231983835.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_off0000c637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC637 5424 bytes
SHA-256: 5541699e3308e2978c5d739f2d74f8dbb6a1e9f0f504e102fa93ad62fc7cc313
font_01_sfnt_off0000d8ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BA 11300 bytes
SHA-256: 198bc56a85175be9f0feb7f80b2a8a4fc7e982d22f1a1b925845b915e22c77be

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