Malicious PDF — malware analysis report

Static analysis result for SHA-256 191ebdb8f5399dfb…

MALICIOUS

PDF

67.7 KB Created: 2021-10-03 18:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: fb9a7e5e1704ac1e1cfb3dcd6ff25754 SHA-1: bf294d4e330f8b14f28be42866e5fc3f3d3cfa59 SHA-256: 191ebdb8f5399dfbfe608d959c4bd69296d36239e03aa6c36d16fe432c47f995
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://wastran.ru/uplcv?utm_term=monday+all+day+happy+hour PDF link annotation
    • http://banquat.com/userfiles/files/redovaxapu.pdfIn PDF document text
    • http://www.psyforyou.nl/upload/fckeditor/file/mosodojo.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613881c03be9c---gerasujozubowosajuxovad.pdfIn PDF document text
    • http://lnimeina.it/userfiles/files/mozumuzizawa.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/52243519038.pdfIn PDF document text
    • http://yilbasipromosyonu.com/userfiles/file/luvinavizixibede.pdfIn PDF document text
    • http://citranco.com/users/files/xuribaraxeb.pdfIn PDF document text
    • http://sushiyaslo.com/uploads/files/17010190974.pdfIn PDF document text
    • http://chokmanee.com/userfiles/file/96883223776.pdfIn PDF document text
    • http://tochuchoinghi.org/files/38221198431.pdfIn PDF document text
    • https://www.algeos.com/js/ckfinder/userfiles/files/vuwezekelolosifadi.pdfIn PDF document text
    • http://www.anaja-inter.org/public/file/rudosorizer.pdfIn PDF document text
    • https://supzg.ch/userfiles/files/79657421428.pdfIn PDF document text
    • http://dientrotiendathc.com/media/ftp/file/gulapojig.pdfIn PDF document text
    • http://ineke-ott.nl/keramiek-beelden-imagesfile/wolotexewoleletiz.pdfIn PDF document text
    • https://consultemergingmarkets.cubsindia.com/files/2292476904.pdfIn PDF document text
    • http://workcoop.org/fckeditor/userimages/file/20210920211741.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/xidosizovifetere.pdfIn PDF document text
    • https://lecourbe.dk/userfiles/file/fukerisomasemuxor.pdfIn PDF document text
    • https://kalitelivideoizle.com/resimler/files/81868457411.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/34831123e84ba4d8668369c22d5c8dff/71586214972.pdfIn PDF document text
    • http://avtosfera28.ru/userfiles/file/dojudo.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/xadawenaliburamipuw.pdfIn PDF document text
    • https://forumhrdbekasi.com/webroot/userfiles/files/17212710757.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_off0000aee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F8 10204 bytes
SHA-256: 0c836f0402d0994094a897cd51fc9b3bce75b59f14cfbb2c64613b2533e58d45
font_02_sfnt_off0000ddb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB5 14328 bytes
SHA-256: 2cb8061fd7fef17b89a5cf7fef6cdca9a57a3112e6efd1e127d7bbe61301a364

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