Malicious PDF — malware analysis report

Static analysis result for SHA-256 941b8a6e13ab17a5…

MALICIOUS

PDF

72.4 KB Created: 2021-10-04 17:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 0b7b91580a37747f0aaec0934425db6f SHA-1: db3ca63c6aacf9153127d6034016fe2e329a2d8d SHA-256: 941b8a6e13ab17a5cabb5fe2d87b4619bee6ffe343caf5d314f9c8d2172d5e2c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9909

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
  • 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.
  • 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://chcial.ru/uplcv?utm_term=polydactyl+cats+for+sale+near+me PDF link annotation
    • https://cmfnepal.org/userfiles/files/16312143684.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146d25505e9f---81160604520.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4899da662---84628029558.pdfIn PDF document text
    • http://hurtowniagrafit.pl/userfiles/file/11471342765.pdfIn PDF document text
    • https://clubharison.com/userfiles/file/66968263104.pdfIn PDF document text
    • http://farmaciafici.com/userfiles/files/medunolovakarebo.pdfIn PDF document text
    • http://baiduvpn.com/upload/files/28479678529.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/teredefigutugerixuxamodej.pdfIn PDF document text
    • http://sbnjl.com/userfiles/files/kowum.pdfIn PDF document text
    • https://equipelec.fr/ckfinder/userfiles/files/nitobeduwokunedira.pdfIn PDF document text
    • https://virker-ikke.dk/files/10341267400.pdfIn PDF document text
    • https://bevasilicones.in/userfiles/file/53836821987.pdfIn PDF document text
    • http://bolt-go77.com/fckeditor/userfiles/file/xogijodumodukar.pdfIn PDF document text
    • http://vidol.eu/userfiles/file/65662964497.pdfIn PDF document text
    • http://webs123.com/userfiles/file/4571714698.pdfIn PDF document text
    • https://faresaldabbous.com/uploads/file/jegakurukodusikuvi.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/202193354311090.pdfIn PDF document text
    • http://peetersinstallatietechniek.nl/upload/files/74174968859.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613559ebb5422---nipabuk.pdfIn PDF document text
    • http://campingwithconvenience.com/files/files/lisajudinunad.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/mibafijakafasamumerelu.pdfIn PDF document text
    • https://siriusdynamics.com/assets/uploads/files/88804957801.pdfIn PDF document text
    • http://sonhanint.com/uploadpic/sun/files/202109101051576090.pdfIn PDF document text
    • http://xn--o39a91gvwm83kbsn.net/FileData/ckfinder/files/20210919_5525E191DBA9C6D3.pdfIn PDF document text
    • http://packturf.fr/files/luvogujemikedog.pdfIn PDF document text
    • https://slicktechproducts.com/newerac2c/userfiles/file/80324541920.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E2 16360 bytes
SHA-256: 626b4447ffc4fe58a21e267fb889130de8c94895ddaa514e851c53720e98cacd
font_01_sfnt_off0000e30f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB26 10660 bytes
SHA-256: 7241947d08e2defcf53112b53b77265c3f20ca9783b8eba3c7c379949f669087