Malicious PDF — malware analysis report

Static analysis result for SHA-256 d675ccde3c53d0db…

MALICIOUS

PDF

42.8 KB Created: 2020-08-05 06:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0d7e03f8ecabec29d33dfb31e090149 SHA-1: 49324ddb9499150d8d4143ae80fcce58370d19c8 SHA-256: d675ccde3c53d0db9ee3bfd665edf7c9bc0e86510bdc4aa66c3acd0cf5a70e3b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary link directing to a known malicious redirector at ttraff.ru. This suggests the document is part of a link-farming or phishing campaign designed to lead users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=achilles+tendon+strengthening+pdf In PDF document text
    • http://files.awickededge.com.au/uploads/1/3/1/4/131454316/fagisab-tevanetumam.pdfIn PDF document text
    • http://files.mancostrails.org/uploads/1/3/0/7/130739831/7084378.pdfIn PDF document text
    • http://files.ajstark.net/uploads/1/3/1/0/131070712/kikurozepobijadagif.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/1/0434/4774/6721/files/20032376349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0913/8075/files/39816635564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/sawiriparuvapebezivotipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/firumudajidekusadopodawaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/78375625480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/92706653482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/56527568352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2590/8383/files/zajip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/5887126479.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 4

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_off00006aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA1 5196 bytes
SHA-256: be357e18e9f6355de4effb49b25b283f2b547b3f3f8f2eeebcce9e4ee0bfb72d
font_01_sfnt_off00007c4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4A 10120 bytes
SHA-256: 49b1589999a7aff2fcbdfa780aecf5c3b274e95ca20ef5fa83fc1e935e3b9104

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