Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbeef074c929878e…

MALICIOUS

PDF

41.0 KB Created: 2020-08-09 13:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7ce3bf60fc79719b265dedcb3fe35ec SHA-1: 5621258383df2c0ab91c8e48c0b18820e12d8494 SHA-256: cbeef074c929878e0a2ef3436915edf3aa53c1ae376cb95694f3152f9dcc0819
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a title and author, likely a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=matei+calinescu+five+faces+of+modernity+pdf, which is likely used to redirect the user to a further malicious destination.

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.cc/pify?keyword=matei+calinescu+five+faces+of+modernity+pdf In PDF document text
    • http://pobokik.thierrymontoya.net/uploads/1/3/2/8/132814930/054892906.pdfIn PDF document text
    • http://files.elfispiewack.com/uploads/1/3/0/9/130969421/5ec303a421931e1.pdfIn PDF document text
    • http://sufuxij.letoilefarm.com/uploads/1/3/0/7/130775085/gakupid.pdfIn PDF document text
    • http://files.lasttimetheywon.com/uploads/1/3/1/8/131871642/a70a947740b.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/1/0428/7247/1718/files/zolubuxega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2910/1735/files/xbox_360_3_red_lights.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/89740889028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9114/8444/files/52240361100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/fadinenijukokinutam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/anfotericina_b_dosis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/rexijajaleva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1350/3133/files/wawopujezawexibemusisoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1368/3874/files/84951964427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/ariosto_orlando_furioso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/1137557742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/ximabuwokub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/wikarixizudanaligekefo.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 8

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_off000061e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E8 5468 bytes
SHA-256: db9f20e19e5d5f02fcc649dccb6320f8eac775b0170d3a33a707415c515cd64b
font_01_sfnt_off0000748b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 10204 bytes
SHA-256: b25499034fed9fe6fef5769c57cc5176d54d673e6fcf08de33b2cd14b9811a24

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