Malicious PDF — malware analysis report

Static analysis result for SHA-256 36f0451fbbffb58c…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 19:10:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e72121fd7f86c84884a9da2a379398ba SHA-1: ad35160498a37dcf53d9b7c0cfb20b22edd1cb73 SHA-256: 36f0451fbbffb58cd239d37f479de3206c494ddcf98f79343cf4ad227dab7645
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bruce lee fighting method volume 1 pdf' and references wkhtmltopdf, suggesting a lure to download a document. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination. 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/pify?keyword=bruce+lee+fighting+method+volume+1+pdf In PDF document text
    • http://lidokefiw.lincolncollegechapelchoir.com/uploads/1/3/2/6/132681670/5531515.pdfIn PDF document text
    • http://files.maccurdysalisbury.org/uploads/1/3/0/7/130738859/c0960.pdfIn PDF document text
    • http://files.cyclonecanvas.com/uploads/1/3/1/1/131163516/1914316.pdfIn PDF document text
    • http://files.seasonalshowers.com/uploads/1/3/0/7/130775145/varubebun-wimitudelejoba.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/1/0435/6728/4379/files/tijagefipaniredal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/kohler_marine_generator_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6855/files/45186475715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8116/9051/files/99219055729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/duxigivofemuzetir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/lurorogegivixamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/58600364098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/39863379665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/kilejojuximanarefanotej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7937/6798/files/java_foundations_3rd_edition.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_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 5340 bytes
SHA-256: db1510327a5fab4fe47532f009a6c5c4679f53e976dec84a7c8b0d9ffbff522e
font_01_sfnt_off00007cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF8 10676 bytes
SHA-256: 70da7074741d404008c00fc97731bb4349bd49ec6d93352fbd2254cf275b516d

Open this report in the interactive analyzer, or submit your own file for analysis.