Malicious PDF — malware analysis report

Static analysis result for SHA-256 b411c604df311f2c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 06:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3036242cc0c21333cb42a70683326fc SHA-1: b56cd648b84e0cffad13991db0964a498c99d367 SHA-256: b411c604df311f2c0e1db46e0467847cc1cbd075837c444b3348a42e3a6a6902
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious URL, disguised as a document about accounting ratios. This link is part of a link farm, suggesting an attempt to distribute malicious content or engage in SEO abuse. The presence of a 'download button' lure further supports the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=accounting+ratios+questions+and+answers+pdf In PDF document text
    • http://files.yurigiorguanime.com/uploads/1/3/2/6/132682607/7cb490.pdfIn PDF document text
    • http://fazolas.kkbuteau.com/uploads/1/3/2/6/132680813/kabure.pdfIn PDF document text
    • http://files.gonzalesmastergardeners.org/uploads/1/3/1/4/131437702/disufisewugaza-wokunidutileb.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/1/0432/0804/8808/files/207884777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4005/files/resto_druid_best_in_slot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/zifugerezojejelepapovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/canada_s_wonderland_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/application_letter_for_teachers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2474/3591/files/how_to_use_airshou.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1630/4278/files/bash_string_comparison.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1767/files/nfl_fantasy_draft_kit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3004/5084/files/wosevuvosovubirodesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/48608158435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudogezemolajefenupil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3765/1107/files/passport_application_form_child.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 3

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_off00006402.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6402 5500 bytes
SHA-256: 639c439a7c0f144e04d2d1c34d4008e1f148986fb9e5f1b4d83b984be709ae4c
font_01_sfnt_off000076d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D4 10332 bytes
SHA-256: c8c333531f13d2efee7c4437f38ef89b2b2c29f50b935aead60b058b69241492

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