Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2344c261ad5ed9…

MALICIOUS

PDF

33.6 KB Created: 2020-09-09 21:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef90a5fc2d6e2151e0404b90a0cd5b7f SHA-1: 71668b553da3cb3086322e56490e65833cb0eca2 SHA-256: 7c2344c261ad5ed98f1d7d7a320a8ce3c575f0ea6aca17b02ff2f266dc3cc248
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting it's designed to lead users to potentially harmful websites. The embedded URL 'https://ttraff.club/wix?keyword=karaoke+bungong+jeumpa' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, reinforcing the attack pattern.

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.club/wix?keyword=karaoke+bungong+jeumpa In PDF document text
    • http://files.slimshaynee-gaming.com/uploads/1/3/2/6/132682327/mapejokedu.pdfIn PDF document text
    • http://files.sheep.education/uploads/1/3/1/3/131381772/ababac.pdfIn PDF document text
    • http://files.cowboyarmory.com/uploads/1/3/1/8/131856950/wonuvuwemiso-wijibajinisatoz-gowip.pdfIn PDF document text
    • http://kixajowob.jonespaytonswimming.com/uploads/1/3/1/1/131164250/2562522.pdfIn PDF document text
    • http://votuk.laboniteca.com/uploads/1/3/1/1/131163776/lerezanigipa.pdfIn 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/18574e_603104cc05274597a95362b4c33eae61.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b5472a_3e87da51a98c417b876db071eb8b32b0.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8bc2a6_dbf4b6e6efb244bdb807612d89c76340.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4733ca_d43de4632ccf43a787bee2a2504ac2f2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9b943771cd09414485b7e159079aa3aa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97aff7_68f53ca328f94ebb953d97fa9111e29f.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/69a512_de96e93218234f55be9dca57005f80bd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_7a97b535424944388ee9c23b16124b08.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a07927_d99ee3a91c4d41de8f5c99b28d50903b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/166c09_e99d61157f9a44388f08d813d06c0a83.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 6

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_off000047d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D4 5180 bytes
SHA-256: 01c5a0bb0bbe175ee6a9b52ddd1859f589832ac7baa26abbe500aa753b3a6fc9
font_01_sfnt_off0000596a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596A 9664 bytes
SHA-256: 4bb1c2da79f99d59c6d8afeea766c0f83d9ca8831cb41d910b25f6bdd1ce59e8

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