Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d151c07fc484f4…

MALICIOUS

PDF

50.2 KB Created: 2020-08-30 22:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4579c090b659aca95b51405bf1f67a25 SHA-1: cb4c8d8046b9ef41d33a96e61f0da52144257503 SHA-256: 84d151c07fc484f4793fa7e163f60a37bd4e2d8ee33ab8da4a3e89cce179e9ba
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically `https://ttraff.ru/wix?keyword=jeedi+ginjalu+mp3+song`. The document body text, though heavily obfuscated, includes this URL and appears to be a lure for a song search, suggesting a phishing or scam attempt. The ML classifier 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/wix?keyword=jeedi+ginjalu+mp3+song 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/b8c837_ea0001b221fd4fb5b415616e2a688e68.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/09273f_d3d69449a87846cc89572006296d9afe.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b910ae_f7bcb378855842029ccc0388cbf4d09b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9eace22d32914984a2f7a99007a56742.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_75af4c98b558483ab5b7d42cc283ab75.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/bipexizukaduvowemadil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0921/6409/files/causative_have_advanced_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/zejibunizusufutosutinev.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/79e5df_e1676b940efb4c468fb4983610bd2e84.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/dc8a8e_45c508d5494942c88c0a303ba4cb8223.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_24f7d0fef4b5417e9c7205c9f62d74ad.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_778eadfd0cd3492fad1978ab6ba96529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/isometric_paper_a4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/mathematical_symbols_list.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

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
stream_005_off0000928b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x928B 22780 bytes
SHA-256: 405a3cf200a06cc0d4e16c3c46acfcd15989a1d1094906007f813ebf79348af5
font_00_sfnt_off00005498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5498 5412 bytes
SHA-256: 37518c980fee32e96350255382a2c4aa6b6810bebb0845743c4065855f577169
font_01_sfnt_off000066f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F3 13840 bytes
SHA-256: a663c40bf238406c18fcb57ca4646dfffc24b0df5c4b80525c876fa8d5866869

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