Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eef51ec5adfa6ba…

MALICIOUS

PDF

42.5 KB Created: 2020-07-23 14:41:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ad9cf8666b1de0655c9b9f8f09ceb95 SHA-1: 22a46093f7f116265c75fa0b9eca49bd07fe6767 SHA-256: 6eef51ec5adfa6ba3936d50d109b1ff3ed0ba46f7d1591f6270bfa803959459b
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and an SEO link farm, suggesting a phishing or scam attempt. The embedded URL points to a redirector that ultimately leads to a malicious site, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF structure itself is designed to trick users into clicking the malicious link.

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=phenolic+pipe+insulation+data+sheet In PDF document text
    • http://files.purplebroom.com/uploads/1/3/1/0/131071137/zetujaropenu-mozug-lubanam.pdfIn PDF document text
    • http://files.sillylillybook.com/uploads/1/3/0/8/130874246/wexadijixaxefijow.pdfIn PDF document text
    • http://files.nayansfiji.com/uploads/1/3/2/7/132740637/9313649.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/1/0436/9675/0742/files/laleruripoboses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/46092520919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/13071723179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/28986378381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/tojifinadizojudojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/dotib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/98757638804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/57710794428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3135/files/xebisakejezobigipunaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/78135981639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/32239742633.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_off00006a40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A40 4948 bytes
SHA-256: 76ee80ed19bb21f9461ca5e6b7ef326c73f9e65c447dd88a974a19cd6a21dc33
font_01_sfnt_off00007b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 9824 bytes
SHA-256: 5d45db92706c1917b8ef2819dc98bfed3e5aec3cba24ed88c3b481dda5509176

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