Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe9a72219e814a1…

MALICIOUS

PDF

68.9 KB Created: 2020-11-23 02:48:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: caa2d6c7e4ad31645241cc0d694d86c1 SHA-1: d5e263b5e8157c79e99b01aabde43094096b485e SHA-256: bfe9a72219e814a1f1222129bf170498da8fc510df2a523346b829af39f401c9
154 Risk Score

Malware Insights

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

The file is a PDF containing a link to a known malicious redirector, traffmen.ru. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=long+beach+towne+center+movie+theater
    • https://cdn-cms.f-static.net/uploads/4370053/normal_5fae93fca544b.pdf
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f92c2420cab6.pdf
    • https://cdn-cms.f-static.net/uploads/4413362/normal_5f9bf4eed1d2d.pdf
    • https://cdn-cms.f-static.net/uploads/4391636/normal_5fb0422ea4887.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/duzexefemosaxe/on_the_value_of_philosophy_bertrand_russell.pdf
    • https://s3.amazonaws.com/xalasawu/nexcast_after_effects_broadcast_package_free.pdf
    • https://uploads.strikinglycdn.com/files/af679e3a-a447-4d6e-9f99-a08de675a8c6/fallout_by_todd_strasser.pdf
    • https://uploads.strikinglycdn.com/files/f636f266-4241-47b2-9ca6-8e33ed7e4d06/instructional_design_trends.pdf
    • https://s3.amazonaws.com/nabifovu/rise_of_nations_full_version.pdf
    • https://s3.amazonaws.com/xanebavifamopez/brucellosis_pathogenesis.pdf
    • https://uploads.strikinglycdn.com/files/c9bb63f4-ed0f-46e0-9922-bf4239a50529/86882079429.pdf
    • https://s3.amazonaws.com/zunaduxa/north_hollywood_high_school_zoo_magnet_center.pdf
    • https://uploads.strikinglycdn.com/files/39e1f057-82be-4a80-a57f-da78d25afcde/89147519933.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0a7.bin
857906dcfe98ecce0043fc6880a41c9c2377c436033ab511ecd88b03c0d19c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A7 5236 bytes
font_01_sfnt_off0000e272.bin
661a28c8cdcbe150676b3e85d135c8636abb49bcbf06a3e0649709a9afe9b8ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xE272 10664 bytes