Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb24875cc818070…

MALICIOUS

PDF

46.6 KB Created: 2020-08-25 14:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ec7619ef30a5c790ce7957cd5a285fc SHA-1: ab376a78f573980a80f1c1edac2d47ec10e53bf0 SHA-256: cfb24875cc81807081b505b24c4b3eb44a034740c6bb0314d81a6379d68b2b53
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 numerous embedded URLs pointing to external PDF documents. One of these URLs, 'https://ttraff.ru/pify?keyword=beefeater+ceremonial+uniform', is flagged as a known malicious redirector. The primary intent appears to be SEO manipulation or user redirection to potentially harmful sites, rather than direct content delivery.

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=beefeater+ceremonial+uniform In PDF document text
    • http://files.planetmediapresspublications-newcomsystems.com/uploads/1/3/2/3/132302995/3583888.pdfIn PDF document text
    • http://files.dovetailmt.com/uploads/1/3/1/6/131636577/2573441.pdfIn PDF document text
    • http://files.heavyrent.nl/uploads/1/3/0/8/130814110/15458c528e0.pdfIn PDF document text
    • http://jorabud.scgpaulette.com/uploads/1/3/1/4/131483281/7589725.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/1/0432/0965/4434/files/54333617230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5637/files/wuthering_heights_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2001/6021/files/nuworivelupowebotetet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/3663/5299/files/eenadu_epaper_online_today.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/68694194107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/tanoladasosozekekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9906/0392/files/pukijiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/xivupevexidetaxazesofik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/rpf_ancillary_result.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/jexosukuwuvagetasifamubel.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 6

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_off00007ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD2 4900 bytes
SHA-256: f8f141acb365b3e3104b9683acd4b3df293f15ef247140782694133310b77927
font_01_sfnt_off00008b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 10152 bytes
SHA-256: 342f3b14bcf31e96b9e8989fafb91c7c860ca17c8492814735f78cfbbc2ca4f8

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