Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fbec2d0c984e770…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 06:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b724c97b466938558d6534b94ab82b6c SHA-1: e98d7e3a01dbb7639bd1f664aa53aa25e1889143 SHA-256: 6fbec2d0c984e77043b9e4a9919a319ee2486a7f48bf0ad92ae028d9cee9a4aa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, including a redirector to 'ttraff.cc', which is flagged as malicious. The document body and heuristics indicate a link farm strategy, likely intended to drive traffic to various PDF download sites, potentially for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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=introduction+to+functional+data+analysis+kokoszka+pdf In PDF document text
    • http://files.twcnpc.com/uploads/1/3/0/7/130775490/dikutomif_gasin_fudekujafijuf.pdfIn PDF document text
    • http://files.redesignforwholefamilies.com/uploads/1/3/1/8/131857193/jowudakavesof-rusodisoton-zofokizubolas.pdfIn PDF document text
    • http://files.omganeshayoga.com/uploads/1/3/0/9/130969652/4093051.pdfIn PDF document text
    • http://gukivawuk.sbarcperformancehorses.com/uploads/1/3/1/4/131453046/c7c4c2351.pdfIn PDF document text
    • http://jinabiras.linkwestapt.com/uploads/1/3/0/8/130874431/punovokosen-bizaviwibobe-gegizago.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/1/0432/0470/6464/files/66841992051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0323/8811/files/tusovakomidepojuluram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/number_theory_and_geometry_an_introduction_to_arithmetic_geometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3439/5295/files/89124784875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1818/1016/files/clara_dos_anjos_lima_barreto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0303/4276/files/google_docs_certificate_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/69965771862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4983/5930/files/17230807446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/makodomodivimube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/43041014321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/68904682930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/56552858694.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_off00006ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADA 5300 bytes
SHA-256: e59a19c1048832a859c98fcac5b2fdfe54f70910e3254dbbc9b3b50bc4a35d15
font_01_sfnt_off00007d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 9980 bytes
SHA-256: 079719147719947798d3d61913c81488e571e62f844ee892674e796cc4fee088

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