Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af727b95139be24…

MALICIOUS

PDF

82.2 KB Created: 2021-01-01 14:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 594f1b3412b0fbf3589c9ef675656178 SHA-1: ff2158d50eb9ddb218260c8dcd493c3d19705d71 SHA-256: 4af727b95139be245301c2df684ae8a3ae59da975afdbfcecbac4fcd05926923
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=spiders+portland+oregon PDF link annotation
    • https://lufokozu.weebly.com/uploads/1/3/4/7/134755413/091cfc.pdfIn PDF document text
    • https://lipitedo.weebly.com/uploads/1/3/4/3/134380968/jonux.pdfIn PDF document text
    • https://cdn.sqhk.co/taduzotul/tFBiaMY/39574230076.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c106915-8bcd-4926-93bf-145afa9f8a05/janenezakasuvet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b48558-5273-4ffb-b79b-773a2c5a7674/tebakajanuzuparulujot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25a61a64-e100-49b2-be9c-40b98b8f4572/29771518455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2707997a-5729-4d2b-ae32-ac6243efb425/ekorre_swing_installation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/021e7a41-2cc7-43f8-9a53-6eda3fd2f47d/98436072442.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eadca0b5-c7eb-477b-8ffc-7889467e91ec/tesubikevanesibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2e1d222-db92-4e58-b08b-ef578a02561e/copperknob_line_dance_charts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c861a94-1322-40d6-92c7-5c7dc6a8f2d8/kejexuketi.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEC 5228 bytes
SHA-256: 3d582cfcd41f35b2f2d0ac035e520c6f3d6aebd9968536488340601bdee3e289
font_01_sfnt_off000101bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BD 10964 bytes
SHA-256: ba9cddf064d7803d999e1d6b251697205ab72b6f968e150299f6254e3e047662
font_02_sfnt_off00012705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12705 16068 bytes
SHA-256: 4111154e076100b82c15878e86323e11c180b5a01e43f9a7d572491bd9fbd500