Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca0a3f156521c31…

MALICIOUS

PDF

69.2 KB Created: 2020-11-24 22:18:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fdd0dec20a0df182f595142ef60eec8 SHA-1: 1cc7f92b3a71fe8afffef1f3ea9b94fc230c1d6d SHA-256: 0ca0a3f156521c31430621b2a90f1d2d3d54661466fff4e3cd004ce94280063b
136 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 high-severity 'PDF_SEO_UTM_REDIRECTOR_LINK' rule, indicating it uses an image lure to redirect users to a phishing site. The ML classifier and ClamAV also identified it as malicious. The embedded URL, https://trafffi.ru/aws?utm_term=battletech+guide+skills, is the primary indicator of compromise, likely serving as a gateway to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffi.ru/aws?utm_term=battletech+guide+skills PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366011/normal_5f9464af06302.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_5fab9b29ce6c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483070/normal_5faea89d1ae4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5f8d8ea94406b.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/pidufozu/jozegi.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/mexenixaxesegasixane.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/teturumalixete.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/36901414623.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/vevodegevaligawozimonofa.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/75577766067.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/rotusafur.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/topibebojivebobijawepi.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/pejizoze.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/36405848389.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/r_vs_s_configuration.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_off0000d1bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BF 5220 bytes
SHA-256: 742985527a8e87fceddc642292152bdfa5d2fd26e551889e72f76e7e8f775da3
font_01_sfnt_off0000e378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE378 10780 bytes
SHA-256: 7446b1e4a92a69f513b1199ffcada5e579f863eafa0b92d71600a851b666db34

Open this report in the interactive analyzer, or submit your own file for analysis.