Malicious PDF — malware analysis report

Static analysis result for SHA-256 726bb644fa8559b4…

MALICIOUS

PDF

86.3 KB Created: 2021-09-19 11:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-12
MD5: fd841492f8d108f63b15e1ed170b7cf2 SHA-1: 580449ff062ba4b2bf951bd41253250865a43f2c SHA-256: 726bb644fa8559b4648ca1de05b4b7fb9185ed763b69b688cf7cc7eb6ea3136f
181 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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 http://gk-eventus.ru/admin/ckfinder/userfiles/files/nupogatogedumovigatule.pdf In PDF document text
    • http://test-immo.com/file/31206455405.pdfIn PDF document text
    • http://thueotodn.com/uploads/image/files/niliritutada.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/vamok.pdfIn PDF document text
    • http://www.amedna.com/userfiles/files/12827891250.pdfIn PDF document text
    • http://videotour24.com/data/fckupload/file/13655225454.pdfIn PDF document text
    • http://nano-vip.com/ckfinder/userfiles/files/53454264603.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/77ea760bcbe5de23d53eda9cfb8ccab5/jajiwisowuvumexixozo.pdfIn PDF document text
    • https://sgicorp.com/userfiles/files/2854861826.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/61203309819.pdfIn PDF document text
    • https://manhremhoangvan.vn/wp-content/uploads/files/lozotibakelawijemisor.pdfIn PDF document text
    • http://websurin.net/UserFiles/File/tozumanupavoxekuzeg.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/32235165119.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/gijifumuzanotitirufopolir.pdfIn PDF document text
    • https://shoppingplanet.ro/ckfinder/userfiles/files/bazopixewupamiwasamut.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16143b4d22a27b---wilonimekuvelap.pdfIn PDF document text
    • https://francemonde.news/UserFiles/file/80991073521.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/3pmrnckd5i2hu0fd8vi4h0r665/vefuso.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/f7cd98bc3a6085bb5877822367f54a7d/sedilojaziguregaromofatur.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/deromubuwegimuvosasumufug.pdfIn PDF document text
    • http://artistprasanna.com/userfiles/file/finukoberoruk.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1613942e08cd04---31733797673.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138feb012508---47528216090.pdfIn PDF document text
    • https://adurucui.com/ckfinder/files/3898393621.pdfIn PDF document text
    • https://bankkartya.hu/js/ckfinder/userfiles/files/disasatigadigapakabugoxaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=download+apk+monster+hunter+storiesPDF 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_off0000e936.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e936.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE936 18792 bytes
SHA-256: e4dcf24fae1dfe882ca49f4c250e2be9ed0a5a05d63ac69cb3596b39bf03007e
font_01_sfnt_off00011a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A46 10936 bytes
SHA-256: 716e89f8bc94f01c1fdc51dfc22e25234dc6e6e3a94c54196f277068bff8fef7
font_02_sfnt_off00013378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13378 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1