Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87225ea4f47fabd…

MALICIOUS

PDF

51.4 KB Created: 2020-08-04 14:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbe29d92e7d26fe95c3e9eec3d7a4a77 SHA-1: 6ee0e51f49d7c067ba0a254d335f7a1d0c3dd019 SHA-256: a87225ea4f47fabdcc3eaa52cfa3a1b1d26f79446c9ed213be0ded1b8b299980
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting a phishing or redirection attempt. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination. The ML classifier also strongly flagged this PDF as malicious.

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=game+design+theory+keith+burgun+pdf In PDF document text
    • http://files.vrarqueen.com/uploads/1/3/1/3/131383681/vulumatem_reveb_vidomubej.pdfIn PDF document text
    • http://pafir.oldtimeradioreview.com/uploads/1/3/2/8/132816036/35c587e9aac4.pdfIn PDF document text
    • http://files.moonchildsnowboards.com/uploads/1/3/0/7/130738894/fe31980a.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/1/0431/5856/9128/files/41536165580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4189/1238/files/duzoginawanugoxubibima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/34438664762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/wild_magic_sorcerer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7505/0395/files/16986774099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9083/files/nisadawefujelopugul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8326/0314/files/rewelimiwuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9232/7077/files/savita_bhabhi_episode_40.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9729/2967/files/80611616585.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 3

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_off000089e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E9 5760 bytes
SHA-256: ba10387a2e8fd24a588ec08590081eca1d3002f1d900ee352654e38767b00728
font_01_sfnt_off00009d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5D 10352 bytes
SHA-256: ca017c59f2e6d91e22c79c8e83abb90ec666a3672c20bc9d144fe4c61983679c

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