Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f6dc71be44baab6…

MALICIOUS

PDF

90.3 KB Created: 2020-12-23 18:00:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: 5b55303ad82a03f16c00fbf8e86a72dc SHA-1: 527f8756f66da4ea3bbbe3901e2e81d7129b4d1a SHA-256: 8f6dc71be44baab649810c5dcc4594d206cdb37af7c0ba2f2d9d63c9c89003c2
254 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
  • 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.
  • 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.
  • 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://cdn.sqhk.co/numanazolov/CgiWnQB/motor_touring_matic_indonesia.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_5f97cfe3afc2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419412/normal_5fb2922acc50d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_5fc158f0c8099.pdfIn PDF document text
    • https://simomoluxaruto.weebly.com/uploads/1/3/4/8/134859410/2528844.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405208/normal_5fa37e965de20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5fd66b9e8a2be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407996/normal_5fc87547684d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5fb4ace0f15a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423166/normal_5fccbd23e5727.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/RBHOYGx/xamamexuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420915/normal_5fd9719301ea4.pdfIn PDF document text
    • https://traffmen.ru/123?utm_term=town+of+riverhead+building+departmentIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000124a5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000124a5.bin)
    • 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_off000124a5.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A5 5520 bytes
SHA-256: 6e66b1f75e39fbc0941e79c2dfdf116946607f87e50da34e688449144cb285cd
font_01_sfnt_off00013756.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13756 10780 bytes
SHA-256: c619d0cd404c50a73e48209ae43244655c514bb3c82477bbcc99d9583b7830db

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