Malicious PDF — malware analysis report

Static analysis result for SHA-256 657d098bed797030…

MALICIOUS

PDF

71.5 KB Created: 2020-12-24 17:59:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d5c355497962d7af2242296bbf5b41a5 SHA-1: b6fe456144201c017f75a99551c149a47f1e7691 SHA-256: 657d098bed79703098cb25b11da56c2493b6fbc2e4e7f0523e29bcf189859492
194 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier. It contains embedded links that redirect to known malicious infrastructure, specifically `https://traffine.ru/aws?utm_term=whirlpool+duet+washer+owners+manual+pdf`, which is used in phishing lures. The document body, though heavily obfuscated, suggests a lure related to a "Whirlpool duet washer owners manual pdf".

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • 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://traffine.ru/aws?utm_term=whirlpool+duet+washer+owners+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5f9c9b8d35b97.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/kotivipunex.pdfIn PDF document text
    • https://xipejefokodidub.weebly.com/uploads/1/3/4/6/134612454/zepotebomujisemovur.pdfIn PDF document text
    • https://tupodawemizaz.weebly.com/uploads/1/3/4/5/134594588/karixogala_viratotadarat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403259/normal_5f9b290d92dd9.pdfIn PDF document text
    • https://boduburul.weebly.com/uploads/1/3/4/6/134654649/6504074.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/tojabixefova/semanticity_in_animal_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20372ff0-b04d-4f61-bfd4-f8e2570f9fdb/lasko_max_performance_pivoting_utility_fan.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/aprender_portugues_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/action_bar_android_kotlin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/977c8cd6-e609-4ddf-a19b-33f131b76fe3/96573020934.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_off0000dab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB6 5388 bytes
SHA-256: 34f5360afabbf872d34c31a6168cf3837d95be94949f0bdff1c7a4c043316a58
font_01_sfnt_off0000ecf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF2 10636 bytes
SHA-256: cb7e5ed99a3557a22fefdf23087a897107262997ef90a6574d10920403e71b78