Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa3e2d9e458def…

MALICIOUS

PDF

77.9 KB Created: 2022-04-05 06:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: c93da928f1b6b935a006b59edfd71065 SHA-1: 1e4e21224632dae3b5361817bc8f872e4ac6afc2 SHA-256: a4fa3e2d9e458def31223f806c5c1ba60c39ce173aa515e93d4ad2574fb07201
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://yubit.co.za/YmrXLWy8?keyword=el%20mundo%20de%20sofia%20rese%C3%B1a%20libro PDF link annotation
    • https://xozoravupot.weebly.com/uploads/1/3/4/3/134314106/dudagupowak.pdfIn PDF document text
    • https://tugixafebav.weebly.com/uploads/1/3/2/6/132681891/3474262.pdfIn PDF document text
    • https://budorezaru.weebly.com/uploads/1/3/4/8/134859022/jimelurod-mowefusobi-ripixodu.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202203131248018554.pdfIn PDF document text
    • https://nepikazot.weebly.com/uploads/1/3/4/5/134526085/badari.pdfIn PDF document text
    • https://gixujadimi.weebly.com/uploads/1/3/4/7/134708567/kapavudored.pdfIn PDF document text
    • https://bubinaxe.weebly.com/uploads/1/3/2/6/132681619/vekadofexamota_kasisubuna_gaxidebavof_latufotipo.pdfIn PDF document text
    • http://4998horo.gmmwireless.com/contents/files/1939377099.pdfIn PDF document text
    • https://xufizuwerab.weebly.com/uploads/1/3/0/7/130738786/9803969.pdfIn PDF document text
    • http://iabmbikaner.org/public/ckeditor/kcfinder/upload/files/29758521475.pdfIn PDF document text
    • https://vuxizufekek.weebly.com/uploads/1/3/4/8/134864169/nomadirigun.pdfIn PDF document text
    • https://gitojigobireko.weebly.com/uploads/1/3/4/5/134517815/lapiwiso.pdfIn PDF document text
    • http://wieswioska.pl/userfiles/file/sewilufivunusamikixoziso.pdfIn PDF document text
    • https://zisovubuzuteb.weebly.com/uploads/1/3/6/0/136086112/1486150.pdfIn PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/208dfdda.pdfIn PDF document text
    • https://wavujuwaliv.weebly.com/uploads/1/3/4/3/134375487/bomewupepuvoke-jakamomek.pdfIn PDF document text
    • https://lesikikonojen.weebly.com/uploads/1/3/0/7/130740189/8811699.pdfIn PDF document text
    • https://jezipupokegem.weebly.com/uploads/1/3/4/0/134042816/vevaralosurekovuviv.pdfIn PDF document text
    • https://fusewabewu.weebly.com/uploads/1/4/1/3/141347561/c55f774d8d7d72.pdfIn PDF document text
    • https://fomiradoxep.weebly.com/uploads/1/3/4/5/134512134/f17edaba8fce7a.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/27080483889.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 extracted file (font_00_sfnt_off0000c94a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c94a.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94A 10844 bytes
SHA-256: cd3df5240d4ca511e3c42355607045f37b5f4097380c7e13bf0781a134b9c36c
font_01_sfnt_off0000e1ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EF 17760 bytes
SHA-256: 161c5882b54f437dade3139106da7a3af884938d12cf633903e20118959804d1
font_02_sfnt_off00010ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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