Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6a53d68fab24db…

MALICIOUS

PDF

46.3 KB Created: 2020-07-31 07:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0c845ed829d0efec5d453fe09904fa9 SHA-1: 7c3379912a1e800f3aeda83f9ee5ea2d9ea64a2b SHA-256: eb6a53d68fab24dbf358bb7c0df77fda3b6744216a62b309856cc37c709fc536
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, many hosted on Shopify, suggesting a link farm designed for SEO manipulation. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.ru', which is used to lure users into downloading further malicious content. The ML classifier 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=water+resources+and+irrigation+engineering+important+questions+pdf In PDF document text
    • http://files.mthja.com/uploads/1/3/1/4/131484133/botakeveveb.pdfIn PDF document text
    • http://files.cyclonebattalion.com/uploads/1/3/1/8/131871692/3296790.pdfIn PDF document text
    • http://files.islandbusinessnetwork.co.uk/uploads/1/3/2/6/132681587/6003944.pdfIn PDF document text
    • http://files.centralvetimaging.com/uploads/1/3/0/7/130738596/576251.pdfIn PDF document text
    • http://files.judicheco.com/uploads/1/3/1/6/131607712/9605056.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/1/0428/1411/1903/files/30723296722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/wodexes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/76843566366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/jowalineriwebotumopuluku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53551688275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4488/6936/files/novunugakudalisekaxode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8534/8508/files/kigevowod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/baxijabedozureruxexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6542/5570/files/pebupuxenenezu.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 8

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_off00007740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7740 5464 bytes
SHA-256: 9dfe54c43871f3df92a1b2ac02dc8daf59deb031c9c7867f5a4ef7439c067a04
font_01_sfnt_off000089c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 9848 bytes
SHA-256: 2caca49d0fa548d57e1d67ba87a1f84f30b311470460182bbcb7e64f2bcc72ec

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