Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ed05dd011fd34b…

MALICIOUS

PDF

48.9 KB Created: 2020-09-01 00:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bf0e5abf88c7237253a3c4caafcee72 SHA-1: c851551059a093f2f3d4b1c3b515b73fe348c0d5 SHA-256: 89ed05dd011fd34b1e0bd8e097ce9607afb9495cb20ff596f29f3bf129d30f15
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing campaigns. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=calisthenic+movement+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious content. The file also contains a large number of links to external PDFs, likely part of a link farm to improve search engine ranking for malicious content.

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.com/pify?keyword=calisthenic+movement+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/ca9b0a_49699747c6e647cb89b34442aeb25a06.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_743a26bed5e847c9bbbd96eeb19aa4b5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bfbc46_eabb8071d77d4232ae03e4c76e32da45.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3794/0133/files/27191523051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/fisicoquimica_gilbert_w_castellan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3612/2008/files/nadekufumawidemasab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/60378625743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/4178153464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5060/6496/files/airborne_radar_beamforming.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_a55c3657c1c346ceb08a8fe36e0100b7.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/52b593_2d3bdd1e7f1b4c1f8cafbb08273cec45.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72D3 5264 bytes
SHA-256: e826f3cc71958c4bd752177b6d725bdbfc6b7c7b6050670317a5d2afae160cc9
font_01_sfnt_off00008495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8495 4064 bytes
SHA-256: 653f61f74aa9e8a729509f02b4b720bc6c04a82a34011ebeaf49bc12578a6f7b
font_02_sfnt_off00009328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9328 10504 bytes
SHA-256: 52c2f8ca619ad39030879e93e45e00017809b17b03bf3245343317971b471824

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