Malicious PDF — malware analysis report

Static analysis result for SHA-256 409610ec64d8e566…

MALICIOUS

PDF

37.9 KB Created: 2020-08-05 00:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9d25d28ef57b982f4456fc664148066 SHA-1: 9b47bb0e81183a3c47fc759f0bacf8bd8e4e1ef7 SHA-256: 409610ec64d8e566ad0d34b7db1a58a4cb1b69adfb468a142ae74e134906f830
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, 'https://ttraff.ru/pify?keyword=autism+fact+sheet+pdf+uk', which is disguised as a legitimate document. The ML classifier strongly indicated maliciousness. The document body text, though garbled, contains the same lure text, reinforcing the social engineering aspect.

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=autism+fact+sheet+pdf+uk In PDF document text
    • http://files.aspiretogetherforum.org/uploads/1/3/1/4/131482975/6485956.pdfIn PDF document text
    • http://files.romanodacosta.com/uploads/1/3/1/4/131454696/c239b1a507.pdfIn PDF document text
    • http://files.burrataandchardonnay.com/uploads/1/3/1/4/131483067/2563743.pdfIn PDF document text
    • http://files.portlandpipes.com/uploads/1/3/1/0/131069869/nolaf-jarulos.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/1/0432/4923/8184/files/jogefagekepofozawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/11511156980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9222/0829/files/3826388121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/76101797491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/53840998506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/76140162078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kilezibuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/megofivixanulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4419/9848/files/58806308382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/dixofajegani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/nakexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1663/4016/files/jibivinakabamuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/95841101473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/12092322719.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
🗂 Part of campaign: carolinewatson.org 3 samples

Related samples 5

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_off00005773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5773 5320 bytes
SHA-256: 54201055af1649da8a962261e97a1785030c5c7cd58e8790f146d07afead51ab
font_01_sfnt_off0000696b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x696B 9708 bytes
SHA-256: 4c42a3cc8024810a878148c0aa5c39296ed09dbcbd75c2568a1594516dae80bb

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