Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd06309fcb0ba1d3…

MALICIOUS

PDF

60.9 KB Created: 2020-08-01 21:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cb833cbd95ae7c1c565567322824dda SHA-1: 8dfded662c527e7efa90a758e0f739332e8fbe92 SHA-256: cd06309fcb0ba1d3600a80b85b35bcd4f7366c3c2ea3109f68d20e7ec5600fa0
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing a significant number of embedded URLs. One of these URLs, 'https://ttraff.ru/pify?keyword=dark+disciple+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous shopify.com links, while some are benign, contributes to the overall SEO spamming nature of the document.

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=dark+disciple+pdf In PDF document text
    • http://files.inversitymodelmanagement.com/uploads/1/3/2/8/132815003/disiwakasug_regujafixobeme.pdfIn PDF document text
    • http://files.cshanice.com/uploads/1/3/1/8/131871698/5531453.pdfIn PDF document text
    • http://files.jcpaba.com/uploads/1/3/0/8/130874077/c3ed74ce69dcc00.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/1/0437/6035/3429/files/vmware_workstation_pro_15_license_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/papulabowowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/weber_grill_repairs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/58523076998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33435760041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/48414298897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0269/files/47972315148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7283/8039/files/25560703108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3399/files/rumafot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/54407830706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/43029527909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7558/2617/files/pewamiwovibavovebese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6423/6968/files/kekokipetowuwif.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_off0000b21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21E 5212 bytes
SHA-256: 1b198613bc9fb67713d777f68e9b43d3c59bfc26292e72cada3f8ee3a4e2b772
font_01_sfnt_off0000c3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F2 10192 bytes
SHA-256: 4597cc806d03453fd1d0b6f4a92a8c41de414b91185556e7c1673646211d8fa6

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