Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecd08e26d31dfcd5…

MALICIOUS

PDF

39.2 KB Created: 2020-08-16 13:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6fc04c4f418860fcac09014aaaf61ece SHA-1: c330da671b12fb1e316f5f28cfbd86fbda39a910 SHA-256: ecd08e26d31dfcd58178f09ca2e56c57fce4f020567163bc4f566a13097fdab0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm designed to obscure the ultimate destination. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=profit+and+loss+account+balance+sheet+format'. This suggests the document's primary purpose is to lure users to malicious sites, potentially for phishing or to download further malware.

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=profit+and+loss+account+balance+sheet+format In PDF document text
    • http://files.communityfencing.org.uk/uploads/1/3/0/7/130739817/gulojaw-patazumetafedu-fuxoxuma-tinuluxi.pdfIn PDF document text
    • http://files.southsidemetalworks.com/uploads/1/3/1/3/131379312/fuwufiwofubexi.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/1/0434/2956/0481/files/for_loop_lua.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/1657552650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/tapupafuroradidofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8306/3715/files/53773171898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/84896791356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/lobiwiterogezopitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/rubozebeketuninubevujiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9318/0070/files/ielts_academic_writing_task_1_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/jusiko.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_off00005cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD3 5404 bytes
SHA-256: 60cf0c8cddb38295c192a11d69e8ceb59fe54acd6ed34c69260a7c4fc0880fb6
font_01_sfnt_off00006ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF2 9676 bytes
SHA-256: 996b324bb9070186525e86133e58937222202edb13acfe027e1e52d1a71a575e

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