Malicious PDF — malware analysis report

Static analysis result for SHA-256 550445ee3e7efc20…

MALICIOUS

PDF

42.9 KB Created: 2020-10-11 15:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 3a5df3c23ea29944da1903c1cd48fa1a SHA-1: 365165bc24aa6368a4f907fcef5b92e3b7c63b2e SHA-256: 550445ee3e7efc2048d1a08ccd71c970e40047114f40b3943234996fe5bfdafe
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ggtraff.ru/strik?keyword=lord+of+the+rings+fellowship+of+the+ring+soundtrack In PDF document text
    • http://files.burkedtech.com/uploads/1/3/2/6/132681233/44762.pdfIn PDF document text
    • http://files.obpassociation.org/uploads/1/3/0/7/130739287/joneniwunaxuxu-dofemik-pubinebelere.pdfIn PDF document text
    • http://files.faithandgrind.org/uploads/1/3/1/4/131437308/mubekulonaruju-zidukewezelo-buxiw-dofovetelemam.pdfIn PDF document text
    • http://mipumuw.aloradunque.org/uploads/1/3/2/7/132740482/175335.pdfIn PDF document text
    • http://files.centermentalhealth.com/uploads/1/3/1/4/131438474/8645956.pdfIn PDF document text
    • http://vafejo.beautykingdom1.com/uploads/1/3/1/0/131070381/bovunakurulobawaxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000068bf.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000068bf.bin)
    • https://uploads.strikinglycdn.com/files/dd70d4f4-9d54-4599-a966-f2cf6ac63a97/gefemuresutibono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f4feeec-90df-409d-9bfc-65ecf8be53b3/vinajomimapolipebetisaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1447/3886/files/tunirogemofamipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/15_foot_trampoline_net.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3320/9243/files/tedotuner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/holy_priest_talent_build_legion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/columbia_county_treasurers_office.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_off000068bf.bin)

Related samples 6

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_off000068bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BF 5516 bytes
SHA-256: 49933ef9702d208a6ebad5e65c0c4e3224ccef005b012fe8d4423e45460d6162
font_01_sfnt_off00007b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 10220 bytes
SHA-256: a35de924f8286c5a9fa147b42e88ed9ee2b64ec9d73b6eed20d858d52213a01f

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