Malicious PDF — malware analysis report

Static analysis result for SHA-256 35829dc6c2c8e15e…

MALICIOUS

PDF

39.7 KB Created: 2020-08-06 23:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9be153f508af282641f5b23da4d6b39 SHA-1: 7b5d97c5d84fac3732fd7239f80247e87783d02b SHA-256: 35829dc6c2c8e15e9b90fe0d3650b448c53ba7b70557667e85d838da7024ce2a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body also contains this URL, along with a lure text suggesting a 'carer payment form'. The presence of numerous other links to PDF files hosted on various domains indicates a link farm, likely used to obscure the malicious redirector. No scripts were extracted from this sample.

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=carer+payment+form+pdf+under+16 In PDF document text
    • http://zukopab.kathleenmaree.com/uploads/1/3/1/4/131437423/5387af.pdfIn PDF document text
    • http://files.safran-lab.com/uploads/1/3/1/6/131606027/5fbb67a86401d.pdfIn PDF document text
    • http://files.utadeltazeta.com/uploads/1/3/1/4/131437859/d319aea3a3a.pdfIn PDF document text
    • http://files.christianconnectmedia.com/uploads/1/3/0/7/130775109/kaxamemurufoxef-gudewujakavotag-notikoj-wexog.pdfIn PDF document text
    • http://files.kimkirch.com/uploads/1/3/0/7/130775827/welobozutudirol-fulunim.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/1/0431/0158/5570/files/70605274386.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46287179129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0701/5069/files/bexexalukisagav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/bowelojanejogikepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/discord_how_to_delete_all_messages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/walker_physics_3rd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/noviwuvado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/physiology_of_kidney.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/cantoral_liturgico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0259/2410/files/83746810200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/xagavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2291/6520/files/77074500526.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_off00005e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E78 5192 bytes
SHA-256: dddcf45394dbf124a682747b243c2668491346cbfee5242051cbd95d70dd6a8e
font_01_sfnt_off0000701d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x701D 10012 bytes
SHA-256: 78529ac755a829738d31868821657b10a516fbd4110d7a2cc8904df9f4990d91

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