Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d314cefeca7ab83…

MALICIOUS

PDF

51.2 KB Created: 2020-10-08 08:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-14
MD5: b355a0beb440a60eaa90f351afb6cdaf SHA-1: 9c3ee9d843be65a11c54c116568df5e7abf58c07 SHA-256: 5d314cefeca7ab83b7a3394ecaae1de464fada61150ba64de3d70074b58476d8
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=free+peugeot+306+manual+pdf In PDF document text
    • http://files.avimursolutions.com/uploads/1/3/1/1/131164479/9066314.pdfIn PDF document text
    • http://files.danklandsaga.com/uploads/1/3/1/4/131408546/7023728.pdfIn PDF document text
    • http://files.sharlabarrettskincare.com/uploads/1/3/1/0/131070258/351977.pdfIn PDF document text
    • http://files.uwharriechair.com/uploads/1/3/1/3/131379730/4c37ffb6b416.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000089d8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000089d8.bin)
    • https://cdn.shopify.com/s/files/1/0483/7523/4720/files/54532601433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7035/7653/files/16058324916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7882/3317/files/35274932427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3625/4101/files/periodic_table_practice_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9960/1576/files/83056762517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4324/4190/files/maximum_strength_warm_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0973/5326/files/what_is_a_critical_theory_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/80981930623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4626/4743/files/eve_online_system_requirements_2018.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_off000089d8.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_off000089d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D8 5596 bytes
SHA-256: 719dc8b5914be45397569c801d3811a8111a29ac398c4a97aab54dd135969d21
font_01_sfnt_off00009cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CD3 10284 bytes
SHA-256: b7f71b50e4d9dbd7f1fc6abc32379ab0316a5cfa754fa018c28ee4f9408d9d7f

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