Malicious PDF — malware analysis report

Static analysis result for SHA-256 76e1ac0f2bf5b02b…

MALICIOUS

PDF

44.2 KB Created: 2020-08-19 10:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21075cb4a5965ab79673e19812b749a0 SHA-1: 4c6b9ef66bd2da8c156bc28aec4aa7f626ca6014 SHA-256: 76e1ac0f2bf5b02b5cf421b13b49b0e9b57d4596ee34fa5328989dfa5a922589
194 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'food stamps' but is primarily a link farm designed to redirect users to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate that the document contains numerous links pointing to a redirector service, which is then likely to lead to further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=guidelines+for+food+stamps+in+ky In PDF document text
    • http://setof.ayrshirejudoclub.co.uk/uploads/1/3/1/6/131606289/nodaxazofowiv.pdfIn PDF document text
    • http://files.surflifecoaching.com/uploads/1/3/0/8/130874162/5270611.pdfIn PDF document text
    • http://files.sailingcruisingscotland.com/uploads/1/3/2/7/132712315/jataz_pikelaru.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/1/0431/7446/1594/files/2005_dodge_dakota_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8015/5289/files/97972296812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/mevef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4999/2870/files/1-_99_fishing_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0920/files/54391046810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/sinakabuxadumotizego.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0550/1852/files/zelelizum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/67440839864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/economic_importance_of_arthropods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/73915422500.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 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_off00006e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E83 5384 bytes
SHA-256: 5ecfdb387ac2d1c58ad04d45ed44cb2fa621bc748d3f77945de82033ab127996
font_01_sfnt_off000080c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C8 10396 bytes
SHA-256: de28485f6adfeac34781d37d0514c5e2f3b2a6977d4d9c1268a8322343d099ef

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