Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c10b6171a614d2…

MALICIOUS

PDF

47.8 KB Created: 2020-08-05 16:24:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbbc901831183bb1fc328d243e17aeb5 SHA-1: 4cdfae88c4ac403c978f587d7c1aa699581433de SHA-256: f3c10b6171a614d2b36f50824ed854b2a6c9d41054c29b051f92960c53aed017
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed as a link farm to distribute traffic to malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a malicious redirection scheme.

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=anabolisme+lemak+pdf In PDF document text
    • http://files.wedgewoodgroves.org/uploads/1/3/1/3/131382330/5494241.pdfIn PDF document text
    • http://files.scottrulandphotography.com/uploads/1/3/2/6/132695244/bobokakozinotel-gokesugatater-jojibufisobiwe.pdfIn PDF document text
    • http://files.arcofspringbranch.com/uploads/1/3/1/0/131070098/lokuzivo.pdfIn PDF document text
    • http://files.tbcwp.org/uploads/1/3/1/4/131453818/6777306.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/1/0429/3348/5727/files/keropuwezovurev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/988287446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pajovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7860/6229/files/64149472006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7616/5536/files/75032572502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/xexujizamizagitogox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/anatomy_of_heart_valves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/pokerogejas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/super_deep_throat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/30156961209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/sufafujadotufut.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_off00007d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D28 5284 bytes
SHA-256: 39b1b0c93263c48b54100586c8e09c1d62f780fa2854c1e54fa1259c6ab24068
font_01_sfnt_off00008f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F10 10388 bytes
SHA-256: 4879f32b08b88f67de5191d6da61ca4f7f619c641a800e5d8555b4b7fd592090

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