Malicious PDF — malware analysis report

Static analysis result for SHA-256 f513de3f4bd37e92…

MALICIOUS

PDF

43.3 KB Created: 2020-08-18 23:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 972b79d9d0ce474260e230709351ccfc SHA-1: 582f2f9527c7914876bbe612985f90cd629acb50 SHA-256: f513de3f4bd37e929755ded97a16fc808b962d090b0a9b672bcf52a0fcfd47ba
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector, ttraff.com, which is disguised as a document about femoral canal anatomy. The document also contains a large number of embedded links to other PDFs hosted on Shopify, likely for SEO manipulation to improve the ranking of the malicious redirector. No scripts were extracted, but the primary malicious action is the redirection to the ttraff.com domain.

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.com/pify?keyword=femoral+canal+anatomy+pdf In PDF document text
    • http://nusej.notsogrownuppodcast.com/uploads/1/3/0/8/130873822/nokosusojawedodilo.pdfIn PDF document text
    • http://files.thejourneyinternational.org/uploads/1/3/0/7/130739204/e259b3f7ebedd2.pdfIn PDF document text
    • http://fosukilu.randallbmusic.com/uploads/1/3/0/9/130969858/popifuke_pamemijemazidep.pdfIn PDF document text
    • http://files.cslenergy.com/uploads/1/3/0/8/130874246/192dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fisebupujavilugux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/nejalusiwofudolenuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0937/4365/files/40668448583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3653/9045/files/polajumujokekafodoramo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/54609033961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/tikixinafavizobino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5901/files/kumixipowakevifozape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/99101115736.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9766/1348/files/92_ford_f250.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 4920 bytes
SHA-256: 391d429bce153a8c01b3f81af929b234d68ea08079f26343afd30d92400cbad4
font_01_sfnt_off000071bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BD 9624 bytes
SHA-256: b5452f704d1541da926bc82d6b197e54b170119e4721912e2238777e7eb9a8a5
font_02_sfnt_off00009292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9292 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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