Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb42106fcd21a48…

MALICIOUS

PDF

35.1 KB Created: 2020-08-24 03:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57cc76406f93c220106520ecf5f62b89 SHA-1: 4dee297613537ea37de8545b1ddf55c0a2cfb82e SHA-256: 0cb42106fcd21a48257121aa8b467e0c546930895a31f91e7bfe0e1f7ec087df
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, traff.com, disguised as a clothing size guide. This redirector likely leads to a phishing page or malware download. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO manipulation tactic to obscure the malicious intent. The ML classifier strongly indicates maliciousness.

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://ttraff.com/pify?keyword=vans+junior+clothing+size+guide In PDF document text
    • http://lulusugub.igossuccesstech.org/uploads/1/3/0/7/130739297/8bcefd3ccb1f9.pdfIn PDF document text
    • http://files.americasmusicworks.com/uploads/1/3/0/7/130739789/7aea97fdcebe4.pdfIn PDF document text
    • http://jolamaj.intermenno.net/uploads/1/3/1/4/131407005/4499910.pdfIn PDF document text
    • http://vemes.yarrastudios.com.au/uploads/1/3/1/4/131438641/fusogenovedinuzipuwe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/ed_miracle_reviews.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8031/8118/files/nawovudutisenamaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4708/3429/files/bepokovijigubelapabab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1449/6161/files/watch_dragon_ball_super_episode_76.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0214/9539/files/43408236488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/article_285_labor_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7025/7320/files/13009518771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7818/0259/files/air_pollution_mn_rao_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2448/0416/files/17192330048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/controllers_for_macs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/36195558419.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

Related samples 1

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_off000049c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C0 5292 bytes
SHA-256: ae14d10aa3acfd32f31903250d99c2b439cca9c2637444b71ccb597db73124be
font_01_sfnt_off00005bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBE 10452 bytes
SHA-256: c38bf3b0d068e206780c5436ddc8f034f452018a568ba11a40c13cbb000d4371

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