Malicious PDF — malware analysis report

Static analysis result for SHA-256 42504ffe359238f7…

MALICIOUS

PDF

73.4 KB Created: 2022-03-24 11:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 0e2aa1ecf55a2fe75270f9d9f9c749f1 SHA-1: 6eea828b7b7791090d2ac58b2782770de4319ba8 SHA-256: 42504ffe359238f7d305e5016404e66a5acc8ea9c73efcf2bb7de78c99aa0ad9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://wirut.co.za/YmrXLWy8?keyword=como%20aprender%20ingles%20para%20ni%C3%B1os%20de%2011%20gratis PDF link annotation
    • https://jarufepijup.weebly.com/uploads/1/3/0/7/130776730/tezidokogexurebigoxa.pdfIn PDF document text
    • https://surexirubale.weebly.com/uploads/1/3/4/0/134000129/doligepobaku.pdfIn PDF document text
    • https://zufojemesegogof.weebly.com/uploads/1/3/4/7/134753559/gasufa.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/futovomabagit-fobaxedefimi-kufizoji-gawijon.pdfIn PDF document text
    • https://mitivowa.weebly.com/uploads/1/3/1/6/131607237/lerolobuliketo.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/0339b.pdfIn PDF document text
    • https://kinifuromokemo.weebly.com/uploads/1/3/5/3/135348191/reruxus_mavatovuwowabod_nejelivuvab.pdfIn PDF document text
    • https://ralawuxageg.weebly.com/uploads/1/3/4/3/134319431/1444541.pdfIn PDF document text
    • https://dumugukof.weebly.com/uploads/1/3/4/6/134647937/1885516.pdfIn PDF document text
    • https://wetivaxidufe.weebly.com/uploads/1/3/4/8/134891283/8233671.pdfIn PDF document text
    • https://fumasidabufip.weebly.com/uploads/1/3/0/7/130775820/tasejaz.pdfIn PDF document text
    • https://zeregosuw.weebly.com/uploads/1/3/6/0/136055393/gowimubetewo.pdfIn PDF document text
    • https://zororoxuz.weebly.com/uploads/1/3/4/3/134309160/duwalujid-tefamowigo-lokenegodar-lemufeli.pdfIn PDF document text
    • https://pofubelepegeva.weebly.com/uploads/1/3/0/7/130776421/repamajisumul_xobut.pdfIn PDF document text
    • https://sarofosifuzatu.weebly.com/uploads/1/3/5/3/135329924/fazabumuleluvemaj.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/rufoxarexanawi_dafadakiner_fujikibep.pdfIn PDF document text
    • https://ribovaboj.weebly.com/uploads/1/3/0/7/130775049/tasomogilode.pdfIn PDF document text
    • https://silolovafek.weebly.com/uploads/1/3/4/7/134724041/2349865.pdfIn PDF document text
    • https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/229184.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7F2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000ce96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE96 11024 bytes
SHA-256: 3d512fd715ea9659579338546d36e59f4d81b226abbe0b54cfeb9a721884a8ba
font_02_sfnt_off0000e7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C4 17900 bytes
SHA-256: 9afa7e20f59f4d4b742016321bfaf3ad3c2f7405338874ec83d92e57e33d4ca4

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