Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c66b8eed83898bf…

MALICIOUS

PDF

73.6 KB Created: 2020-11-17 15:34:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-06
MD5: 92edb1b586bd491dd5d09d439042b46a SHA-1: efcd27d5d5771f188846df685f5e709e2d8b2d90 SHA-256: 6c66b8eed83898bf01f72125bae47bb2360e7c49619cddd6c883d2d184ea7191
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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-cms.f-static.net/uploads/4421214/normal_5fada266e06d5.pdf In PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/229687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5f872adaa1e64.pdfIn PDF document text
    • https://fozijiruzixusap.weebly.com/uploads/1/3/4/3/134317533/bexukipovi-weduze-midarexokekik.pdfIn PDF document text
    • https://trafffi.ru/strik?utm_term=come+si+recita+il+rosario+pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e511.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e511.bin)
    • https://uploads.strikinglycdn.com/files/a906777d-a4dc-417e-a420-5e189a412b0e/vajomedarade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edb48d21-4294-4795-8103-57ebb0a22b5b/71612638224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d346471d-c275-4b73-a69c-72c920d7ffba/85115861367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfcd0fb8-c1d0-4cb2-9584-3b7209ca98ff/70156578271.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6473950c-8174-4124-91e6-6e9bdf599580/pfaff_2020_pedal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3128b6b9-f069-4eea-b165-0d41a14dcbe7/97370321906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae9de227-b060-4d89-83e9-1c6aaaa8fe77/91449848633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6451c250-6526-471b-8ab1-6834613107a6/34462037670.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_off0000e511.bin)

Related samples 4

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_off0000e511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE511 5208 bytes
SHA-256: 89c04e823a2f2a8d76594509bd8f17893219cb66d429c1801627ec4abae013a4
font_01_sfnt_off0000f6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6AE 10852 bytes
SHA-256: 1fcc29e6df5f94fa6e05dda85778b5a1ddec82be43a839bce5d7a2458d1923e2

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