Malicious PDF — malware analysis report

Static analysis result for SHA-256 4871a8558fc5ac45…

MALICIOUS

PDF

115.4 KB Created: 2022-04-18 17:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-21
MD5: e60c3aa51ec2fedd81699a77d07529fa SHA-1: 601ae39325f8e1bf91f061ad6dcea04d74b52508 SHA-256: 4871a8558fc5ac45dcee3520d0737f791c4eb65b8630588bc084c5419813e46f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://linuvovozesuv.weebly.com/uploads/1/3/4/7/134774252/wezasujo_joxuvexuz_gomigufogo.pdf In PDF document text
    • https://tiramanab.weebly.com/uploads/1/3/1/8/131856622/2527756af0.pdfIn PDF document text
    • https://gukufevekexuse.weebly.com/uploads/1/3/5/3/135305262/2c67ebac07a.pdfIn PDF document text
    • http://shinaval.ru/userfiles/file/61384673733.pdfIn PDF document text
    • https://kaxobemux.weebly.com/uploads/1/3/4/6/134676595/496263.pdfIn PDF document text
    • https://vumizopefi.weebly.com/uploads/1/3/5/3/135313358/9257616.pdfIn PDF document text
    • https://molowusutet.weebly.com/uploads/1/3/1/3/131380828/68a3d8.pdfIn PDF document text
    • https://gidaletibom.weebly.com/uploads/1/3/4/8/134881461/9814422.pdfIn PDF document text
    • https://rakusisaz.weebly.com/uploads/1/4/1/3/141369618/e035ebbfc67.pdfIn PDF document text
    • http://www.banzolaassociati.com/gestlab/kcfinder/upload/files/konuwokuliwaxasetenuruvo.pdfIn PDF document text
    • https://sorilegumuda.weebly.com/uploads/1/3/4/8/134886674/f5041de.pdfIn PDF document text
    • https://zadafifofubewiv.weebly.com/uploads/1/4/1/3/141343980/lejodiz_pegap_tigudo.pdfIn PDF document text
    • https://vuxuminitemup.weebly.com/uploads/1/3/0/8/130874085/801c938979f7f.pdfIn PDF document text
    • https://ddc-touggourt.dz/ar/files/22695613959.pdfIn PDF document text
    • http://skulpt.in/admin/uploads/file/digigomimutanifofov.pdfIn PDF document text
    • http://schunk-app.com/js/kcfinder/upload/files/nijofatunipamo.pdfIn PDF document text
    • https://vuvuligebefu.weebly.com/uploads/1/3/7/5/137510570/koboponudogak.pdfIn PDF document text
    • https://zimazegikej.weebly.com/uploads/1/3/4/7/134732290/5de7218fd07acf.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/100547282162383bdab912d.pdfIn PDF document text
    • https://yoyep.co.za/YmrXLWy8?keyword=summary%20of%20kantian%20ethicsPDF 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_off00015e7c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00015e7c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E7C 10936 bytes
SHA-256: 2b5913cf6823cd5289eede6a93e3ae5a5a6d5a35aa3b2c726f2eb65e55a5c969
font_01_sfnt_off000177b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177B3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FC5 18396 bytes
SHA-256: acef7c96eb7287d4f8871aee55cdc8c656f0a225bbd08af04616a692f2256681