Malicious PDF — malware analysis report

Static analysis result for SHA-256 185d02e4261b0bd1…

MALICIOUS

PDF

46.0 KB Created: 2020-08-16 23:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 297973d3a7f2e1098c18dc3034cd3b59 SHA-1: e8f34364dfa90667cc2db57cf3f6a7b735ca5a29 SHA-256: 185d02e4261b0bd1dbdb7013b3b8f3288912cf2ed7afafa1c397f066d4e0702b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector to 'ttraff.ru'. This redirector is likely used to obscure the final malicious destination, a common tactic for phishing or malware delivery. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. No scripts were extracted, but the presence of a malicious redirector and a link farm strongly suggests an attempt to lead users to harmful content.

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=cetoacidosis+diabetica+sociedad+espa%25C3%25B1ola+de+pediatria+pdf In PDF document text
    • http://files.beckerpark.com/uploads/1/3/1/4/131407918/6ef700b.pdfIn PDF document text
    • http://files.annmariecooper.com/uploads/1/3/1/1/131163859/c9e70964.pdfIn PDF document text
    • http://files.rolweshomes.com/uploads/1/3/2/6/132682790/libebukarazidap.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/1/0433/3253/4440/files/bareto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8885/files/mapabidegupaluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0596/7514/files/bavowotifutanabirov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/lowal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/46444486755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/jefuwetegezapogodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/sifobedugod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2416/0667/files/31779367676.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 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_off00007062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7062 5404 bytes
SHA-256: 259ba7217e2a1820e1d15e885361b80c249eb7b216d49750bf008592c83cba33
font_01_sfnt_off0000827b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827B 11576 bytes
SHA-256: 677acbfaddef6a49bcf1a3cce6d5ea6485266d997658f48c6dbf787b6309272f

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