Malicious PDF — malware analysis report

Static analysis result for SHA-256 604b7b24430fd3a4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 11:57:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 31237e03d9330fdf811323129d02186e SHA-1: f641c4a93ec383a72702fd11c6249e1820172196 SHA-256: 604b7b24430fd3a4a1118776f8a8dee25e1a614cf3c4cbc26db8b82677a6b9fb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate documents, but they ultimately redirect to a malicious URL. The primary redirector URL is https://ttraff.cc/pify?keyword=characteristics+of+fifth+generation+computers+pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=characteristics+of+fifth+generation+computers+pdf In PDF document text
    • http://files.heartlandracingco.com/uploads/1/3/1/4/131483830/40dd82045.pdfIn PDF document text
    • http://files.hvtelovestudio.com/uploads/1/3/1/0/131070888/6274884.pdfIn PDF document text
    • http://files.mvialions.org/uploads/1/3/1/3/131381540/kejanajiveburibigalo.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/1/0434/0305/1171/files/donapowofubeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5466/0770/files/89641698659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2995/2674/files/87202309272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/52955053131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/37419422208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1089/1682/files/berker_1930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/2017_f150_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/vukosipitavesozomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4361/1036/files/kenmore_refrigerator_side_by_side.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/life_together_dietrich_bonhoeffer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/sewikusepojesob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/69033028983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/pdf_to_dwg_online.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 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_off00006813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6813 5440 bytes
SHA-256: 1f73b490799bce1a449b167a404a7b8c637d6cb8ce775b8264f00779cd58ce76
font_01_sfnt_off00007a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A63 9852 bytes
SHA-256: 7abdfc276ef5c7648538796785317bc6b0010ce0bd1f8cbb8055e7b084687ccb

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