Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fde2a88e81cc8a…

MALICIOUS

PDF

65.6 KB Created: 2021-01-08 06:46:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: 5ac42ac48d67f24a4d240fa99417612f SHA-1: fc86cd05db804debf55c1409a45fc207b3732960 SHA-256: 26fde2a88e81cc8a6b07f613c432c8ecb985f44526272aa9502bd22c37953c27
136 Risk Score

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://trafffe.ru/123?utm_term=webelos+first+responder PDF link annotation
    • https://s3.amazonaws.com/gavexilatuvitaz/case_study_free_template_ppt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388842/normal_5f8f562224efe.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/hotel_preventive_maintenance_schedule_template.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/LgfgjCO/51839503896.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c4e3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c4e3.bin)
    • https://uploads.strikinglycdn.com/files/386d2ca3-695a-4de4-9e86-233d8ea3212b/drum_machine_pad_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7032542c-80fe-4d3f-a600-0445a02941db/11782307694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07a7113-c3f5-42f0-8a2c-819cfcafc59a/1962308737.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b26a349-4966-4772-82fc-f087fd7db582/giwitopaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a8196a-ffc1-4b67-98a4-f9c60f4a1e45/xunalatajuzebob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b55fce-ca82-43a2-9d62-9766e1117099/99261917932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49f72f1c-1248-47a7-bacd-acc81452e4ff/32460061692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ed2d49c-5394-4075-b6df-5df71e5755ba/xumelopomibifefutu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d45b7cd-91e1-400c-a8d8-e9f283526820/vodod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd1c4c2c-5ec2-4908-9afc-d47f0c94908a/venusta_orchard_spider_leucauge_venusta.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 extracted file (font_00_sfnt_off0000c4e3.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E3 4976 bytes
SHA-256: 0e5bebcb4bfa3c3bdd5e749877fbadbadd19ebf0215fb430b7d4fcf7e61750e9
font_01_sfnt_off0000d5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E6 10372 bytes
SHA-256: b9aa37a2eed4215079451302050c5f3f9583c00b07108ad2beb9a3548187f866