Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc5c50022e36370…

MALICIOUS

PDF

42.2 KB Created: 2020-08-04 05:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f848e1ca0cd4e797dbd78658e3274b5c SHA-1: 494bc5b5ab52e8f8c423a8887cef368c01eceb39 SHA-256: 8cc5c50022e3637074855e06df633ef7d8b69dc4a2d700d16574d908af37d7f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, which is further supported by the ML classifier's high confidence score. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a game manual, directing users to a known malicious redirector. This redirector then likely leads to further malicious content or downloads.

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=baldur+s+gate+descent+into+avernus+pdf+4chan In PDF document text
    • http://files.germantownwrestling.org/uploads/1/3/1/8/131857476/14687.pdfIn PDF document text
    • http://files.pinkdreamz.com/uploads/1/3/1/3/131379380/tixoveven-sopanolusukaf-godudulob-zowoje.pdfIn PDF document text
    • http://files.openroadcandy.com/uploads/1/3/1/6/131636683/1049560.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/1/0432/5657/8206/files/towedasurugixupuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/larabobed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/fawowenuwinuvojevirawara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4342/2362/files/4936182513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9089/files/34253284445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/jikaforetola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/90005376355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/81841920727.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8847/files/trapdoor_crafting_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3133/0969/files/kaxokozurimorosidojin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.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 4

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_off000064ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64ED 5616 bytes
SHA-256: 9247c89b01fa3fc467497ebcfb35b81d37e7468404b94fdeaa308a0e7cd3e84a
font_01_sfnt_off00007814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7814 10496 bytes
SHA-256: 56dd1143b3e36c4e3cc6eb0f4a5bf5d6f59f3e9c3611700ca4fd3135f7ecf2a2

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