Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fa1dcbbdec2c87…

MALICIOUS

PDF

78.9 KB Created: 2022-04-20 17:23:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-02
MD5: 48db41b9f935064b43480e22b30ff10c SHA-1: ac089ff269091cc31939698e21c8e47da35970c5 SHA-256: a4fa1dcbbdec2c87b5a0b9428abdb88be66c625efdd6cd48395aa4d5914ba325
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://loheb.co.za/YmrXLWy8?keyword=hamlet%20shakespeare%20quotes PDF link annotation
    • https://zowagozu.weebly.com/uploads/1/3/4/4/134404721/sokubirosulupot.pdfIn PDF document text
    • https://wibujiwegawej.weebly.com/uploads/1/3/4/8/134899761/lewonagijirijuw.pdfIn PDF document text
    • http://daeryuhealthcare.com/ckupload/files/42980569572.pdfIn PDF document text
    • http://formanwoman.ru/userfiles/files/86388118781.pdfIn PDF document text
    • https://vekukedabil.weebly.com/uploads/1/3/4/7/134710008/2378830.pdfIn PDF document text
    • https://rotonozi.weebly.com/uploads/1/3/5/3/135315410/2073201.pdfIn PDF document text
    • https://sazozalo.weebly.com/uploads/1/4/1/4/141448039/vabenasisorivak.pdfIn PDF document text
    • https://nozabuzewetuk.weebly.com/uploads/1/3/2/6/132683147/bakobewazosov-gudoxize.pdfIn PDF document text
    • http://jedwines.com/cmsCart/upload/file/53213877096.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/fb4f598fad4c5ce6874ed7f1161ae494/loparafizema.pdfIn PDF document text
    • http://bf4.nim.ru/userfiles/files/fajemod.pdfIn PDF document text
    • http://andi-nails.oldalunk.hu/userimages/files/92886286420.pdfIn PDF document text
    • https://xuvitekopa.weebly.com/uploads/1/3/2/7/132712193/virobibu.pdfIn PDF document text
    • http://liily.jp/upload/file/20220401033519.pdfIn PDF document text
    • https://wusukinepazewa.weebly.com/uploads/1/3/4/3/134372908/2383970.pdfIn PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/669d43cf79.pdfIn PDF document text
    • https://xidelora.weebly.com/uploads/1/3/5/2/135296398/851e830fa3372.pdfIn PDF document text
    • https://tedovuja.weebly.com/uploads/1/3/4/4/134465286/rafusubokagim_wizobofibavinil.pdfIn PDF document text
    • https://guzorinimalagaw.weebly.com/uploads/1/3/1/3/131381991/dufeve.pdfIn PDF document text
    • https://vajugape.weebly.com/uploads/1/3/4/7/134767319/d2669c.pdfIn PDF document text
    • http://szsahsh.com/uploads/files/vorawaxebudizapokewarum.pdfIn PDF document text
    • http://formasrl.com/admin/kcfinder/upload/files/likemiwedu.pdfIn PDF document text
    • https://nanagupuwaxa.weebly.com/uploads/1/3/5/3/135322083/9228932.pdfIn PDF document text
    • https://bosebozix.weebly.com/uploads/1/3/4/6/134601905/467010143f5a4.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_off0000cff2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cff2.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_off0000cff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e804.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE804 17096 bytes
SHA-256: c7cf3a50d1a8340225f1abb33c6ad41bf795595d54013c18719d26ff08bb61dd
font_02_sfnt_off00011472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11472 10652 bytes
SHA-256: 4ac98132e2bb55df4a545abac9d36ae4a2c3941e0cb2ef935ea395f548cba0d2

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