Malicious PDF — malware analysis report

Static analysis result for SHA-256 941b8fa9ce156adf…

MALICIOUS

PDF

123.8 KB Created: 2021-10-08 07:57:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 2a0c77c6359569599a1d3496cd82dca5 SHA-1: 4224811141ef1c2feabc8540a07a1f0660b3c126 SHA-256: 941b8fa9ce156adfc22a01bdec5da2e4368ebcac90e1daba809030442efeb22c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 5

  • 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 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://ketchas.ru/uplcv?utm_term=top+level+domain+second+level+domain PDF link annotation
    • http://commsoft.nu/demo/ktb/wsmbilder/files/61881921768.pdfIn PDF document text
    • https://holcom-wd.holcom.vn/webroot/img/files/tinunemometizobikisisib.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/tobibolikobawo.pdfIn PDF document text
    • https://bishopsalamatkhokhar-org.bskm.org/userfiles/file/nilozujavonibak.pdfIn PDF document text
    • https://nepalihemp.com/ckfinder/userfiles/files/rapudesozibivawut.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149428650d96---rojimowul.pdfIn PDF document text
    • http://jatechkj.pl/upload/fck/file/wizavotununazimepet.pdfIn PDF document text
    • https://sharmtocairo.com/userfiles/files/91203077751.pdfIn PDF document text
    • https://alident.centralcms.cloud/galeria/files/givazivibapizin.pdfIn PDF document text
    • http://biogenetec.tw/image/files/20211003_045347.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/97262840761.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/barim.pdfIn PDF document text
    • http://mynotary.ca/sites/all/sites/mynotary.ca/files/zimawadojo.pdfIn PDF document text
    • http://www.psoevalledeabdalajis.es/ckfinder/userfiles/files/47858782415.pdfIn PDF document text
    • http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/10528866844.pdfIn PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/newigepibubaruv.pdfIn PDF document text
    • https://laplacedesstores.com/upload/file/16653778691.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/32196319897.pdfIn PDF document text
    • http://gradn.ru/uploades/fckeditorfile/57285477596.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/6s6vp6a9csafm0qbbpt3d6kvko/nebonulibijovifawo.pdfIn PDF document text
    • https://papiratisk.cz/soubory/54205851625.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/87967782482.pdfIn PDF document text
    • http://energyexcess.com/userfiles/file/29978048931.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A44 16232 bytes
SHA-256: 01cd0e4798e93fb086042d610f43ddeed7bf091af48aa863f5c4a4f61b651684
font_01_sfnt_off00017019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17019 25956 bytes
SHA-256: 454913e409756f3595306e1a29f36ca237de3558f81a0c23bf058b1f6eb33057
font_02_sfnt_off0001b0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0E3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001c8fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C8FA 10504 bytes
SHA-256: c0c15da67b6fa5561c8f02af303adc99899851ee07fdc6e9df3a1e30d65a6d66

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