Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f88963cef6fae5…

MALICIOUS

PDF

35.8 KB Created: 2020-08-23 13:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6581e00bf7b32c5bc52eb33b75112b0d SHA-1: 649302db18141f9b34bf075d6b4495a5f0d6b559 SHA-256: 95f88963cef6fae5544beab225f0b309185684525519b90a869bbe578b7b7415
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=cowan+lake+fishing+report+2018, which is presented within a document body that mimics a fishing report. The document also contains numerous other links to Shopify-hosted PDFs, likely as part of a SEO poisoning or link farm strategy to obscure the malicious redirect.

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=cowan+lake+fishing+report+2018 In PDF document text
    • http://files.newlifetempleretreats.org/uploads/1/3/2/7/132740296/544ea31e.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/1/0435/8239/0435/files/15213514390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7446/7478/files/viluzejit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2629/files/aniara_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9566/files/wojopetudogokuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/human_physiology_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0541/7371/files/rudderless_imdb_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/78724970825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/dixod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3117/4043/files/nolodedoperomenowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/68566106396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/girupuwulebizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/logewedivumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/dukujoruf.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 1

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_off00004d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D81 5744 bytes
SHA-256: 8965ddddb8b223229f8cf9c925ef8739f0eeb7a05f61a197d42b99f4b1ac422b
font_01_sfnt_off00006126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 9792 bytes
SHA-256: e557bc56881ab382b6814dff25b749d5b6958c42059ce057ce850e48b87aedf3

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