Malicious PDF — malware analysis report

Static analysis result for SHA-256 94159db64bd6b47a…

MALICIOUS

PDF

70.0 KB Created: 2021-09-28 09:12:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 9cb7ebcab74313518682b267cb646bdd SHA-1: 2d59b39742e94db64a7cb1d5c79fc7e02f8f65e7 SHA-256: 94159db64bd6b47a6353d088728173339229917e121fa3bab431fe9038f4fd06
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm structure, and the ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to these external links, potentially for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://speculatio.in/ci/userfiles/files/16087175502.pdf In PDF document text
    • http://logicparcel.net/uploadsEditorfile/zixibu.pdfIn PDF document text
    • http://awarelaxcentrum.cz/user_files/file/xatazakikoziwuwomezes.pdfIn PDF document text
    • https://kralpin.com/calisma2/files/uploads/89406692635.pdfIn PDF document text
    • http://skisun.it/userfiles/files/pufugigubawo.pdfIn PDF document text
    • http://mosme.org/uploadfile/files/68717500520.pdfIn PDF document text
    • http://lyzebrno.cz/userfiles/file/wuradonaketa.pdfIn PDF document text
    • http://paneldeconsos.com/userfiles/file/35968363649.pdfIn PDF document text
    • http://fygl.net/uploads/file/080850574698.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/pidegapukew.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/naribugipamoxifufobif.pdfIn PDF document text
    • http://hulstcustoms.ru/uploads/files/30886054841.pdfIn PDF document text
    • http://zae.me/datafiles/file/kewutugijatunefomofib.pdfIn PDF document text
    • http://mathcountsoutreach.org/userfiles/file/66531579993.pdfIn PDF document text
    • http://lica.plovdivweek.com/js/ckfinder/userfiles/files/vowedutonowigaximevi.pdfIn PDF document text
    • https://www.totspotdaynursery.co.uk/ckfinder/userfiles/files/gupuxaviwifijapepifiwe.pdfIn PDF document text
    • http://nusratali.com/userfiles/files/54732006537.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/56625443829.pdfIn PDF document text
    • http://ccsctda.com/ckfinder/userfiles/files/20210928_093504.pdfIn PDF document text
    • https://uzsienis.cvzona.lt/resources/img/files/fonujutimizuzebi.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/1735ad128559b1c0984fca908eb8df1f/54737689846.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/57874289344.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/modowafedidaroxal.pdfIn PDF document text
    • http://dailyliving.nl/ckfinder/userfiles/files/19828025811.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=anime+streaming+androidPDF 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 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_off0000b1a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B5 16208 bytes
SHA-256: 880e532346146c23cfeb4b7cbe8c78e14e16a0c9c20e90da178327f86e447bd3
font_02_sfnt_off0000f276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF276 10528 bytes
SHA-256: 2c8ddc32bbdd72643f43baf0224413c6a9278c93d4765f53fdaee0cf25029aed