Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ed65eec58972c6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-01 23:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b08148af3e5f84f89756197e8ce2e80 SHA-1: dd685ed043099f55c83abeb4b7d17e544458c57b SHA-256: c1ed65eec58972c609a9cd8a305aad2c8d6e1aeeee152adcdd90a88e616b8ce9
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=ccrn+practice+questions+pdf', is flagged as a malicious redirector. This suggests the document is part of a campaign to lure users to malicious sites, likely for phishing or malware distribution.

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=ccrn+practice+questions+pdf In PDF document text
    • http://files.seattlefamilychurch.org/uploads/1/3/0/8/130874075/e6f50ac5f1.pdfIn PDF document text
    • http://files.uptownsheep.com/uploads/1/3/0/7/130775655/mavujuwubiwov-sunibusonaba-logajixafiletav.pdfIn PDF document text
    • http://files.mayhemturbo.com/uploads/1/3/1/8/131856071/zadezimerige.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/1/0430/5059/8562/files/39895950624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8765/files/sodin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bumagigefabap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/zezefopawapiluwibuluva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/nejagukasez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/88890662392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7357/6865/files/tametanexavawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/zuzikavisibaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/jazodapesisetonodod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/bofejufutuzuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/botabekemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4193/8856/files/rorojapawom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3742/5818/files/78114306023.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0C 5148 bytes
SHA-256: 0ee651549860f85b92a2d4f434718ed1da89042628a4b13f4620462495bbcf09
font_01_sfnt_off00007b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9C 10364 bytes
SHA-256: 6e6451e7b9fc3aa25b350f4d7c62b3eef851bd5cd3ec3df2fce19abe98596413

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