Malicious PDF — malware analysis report

Static analysis result for SHA-256 18afd990e3b832ff…

MALICIOUS

PDF

74.3 KB Created: 2022-04-09 13:36:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: aaa33c20589ab20d06fe72ed9dfe545a SHA-1: 12db9a31b7d2cf9def6759818453669a5402ca5c SHA-256: 18afd990e3b832ffe785c41f8d4f5f6628802e07a6cd7415e53d5aea636b122b
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://ph789.com/pinhsuan/files/file/lupegawadigogum.pdf In PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/ziwemudaxazidiginan.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9f48c20549---19117282069.pdfIn PDF document text
    • https://jasezanita.weebly.com/uploads/1/3/1/6/131637239/dakufopup_putufuzalikebut.pdfIn PDF document text
    • https://www.fukuyama-ramen.com/editors/kcfinder/upload/files/bifarudisijaleminuni.pdfIn PDF document text
    • https://ziripovamenof.weebly.com/uploads/1/3/4/6/134647136/wenebubazokat.pdfIn PDF document text
    • https://lemusovigezamo.weebly.com/uploads/1/3/1/3/131381045/07655.pdfIn PDF document text
    • http://mlspoland.co/files/file/jepemewijevonimad.pdfIn PDF document text
    • https://golasokovefo.weebly.com/uploads/1/3/4/4/134490481/fawemaso.pdfIn PDF document text
    • http://sisparts.pl/zdjecia/fck/file/19345638960.pdfIn PDF document text
    • http://mgrenginiai.lt/ckfinder/userfiles/files/tubevorupurobenuvafibuvi.pdfIn PDF document text
    • https://kinumonitebira.weebly.com/uploads/1/3/4/6/134605003/2ccedc74f7ae3b5.pdfIn PDF document text
    • http://www.lacalzadadeoropesa.es/abm/Bibliotecas/kcfinder/upload/files/gegigatemoxol.pdfIn PDF document text
    • http://strahyi.ru/images/file/lekomefepo.pdfIn PDF document text
    • http://tvkinter.com/file_media/file_image/file/galobatu.pdfIn PDF document text
    • https://sinupumu.weebly.com/uploads/1/3/4/8/134893056/kesepewas.pdfIn PDF document text
    • https://nopefulewipedu.weebly.com/uploads/1/3/4/3/134314682/9ce7c07e7304f6.pdfIn PDF document text
    • https://tiger-security.net/webroot/upload/files/ridazabi.pdfIn PDF document text
    • https://lovig.co.za/YmrXLWy8?keyword=leadership%20management%20principles%20models%20and%20theories%20pdfPDF link annotation
    • 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 extracted file (font_00_sfnt_off0000bf2c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bf2c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2C 11024 bytes
SHA-256: 21eb8e5282167270314d2db58428ed3dc15758ba1fddc6c45f35bde8a4464970
font_01_sfnt_off0000d855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD855 16420 bytes
SHA-256: 7ba2a50027ddc76df86233ca4588b186cb51c0252e5f1509cb477dbe2b786a9c
font_02_sfnt_off000102e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1