Malicious PDF — malware analysis report

Static analysis result for SHA-256 4784da3a2c958b1b…

MALICIOUS

PDF

92.8 KB Created: 2021-09-09 08:31:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 2842bdbf07adeb49bb3c198854fd7912 SHA-1: 5bef8dc956f7d6e2ec3e916bb3668822898b7599 SHA-256: 4784da3a2c958b1b944ed379deda16de80a610bfa0d3748602fa8d007cdba63a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://nomylo.ru/uplcv?utm_term=test+driven+development+by+example+kent+beck+pdf+download PDF link annotation
    • http://vaness-sens.fr/ckfinder/userfiles/files/xikuzakimexufopiva.pdfIn PDF document text
    • http://cserepakcio.hu/xdata/file/pobotix.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/23350296924.pdfIn PDF document text
    • https://digireg.it/upload/64280146252.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/97014283726.pdfIn PDF document text
    • http://laserinnsbruck.com/static/26972256833.pdfIn PDF document text
    • http://bischofs-scheune.de/userfiles/file/23248831463.pdfIn PDF document text
    • http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/27788696301.pdfIn PDF document text
    • https://ottopianos.nl/files/15112501434.pdfIn PDF document text
    • http://ydchem.cn/filespath/files/20210903210712.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/49864865486.pdfIn PDF document text
    • http://prefinancovaniehypoteky.sk/res/file/24707209261.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161393ac0640e5---kopebewitazidal.pdfIn PDF document text
    • http://akpanlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rexefunamuwibukuzunijin.pdfIn PDF document text
    • http://highdeal.linkeo.net/ckfinder/userfiles/files/47520657925.pdfIn PDF document text
    • https://brihat-group.com/assets/userfiles/files/mabesemex.pdfIn PDF document text
    • https://careerroots.net/ckfinder/userfiles/files/66068165964.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/tujepifosufazibosilid.pdfIn PDF document text
    • https://tainandentist.com/uploads/files/202109050007549360.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/zawemofis.pdfIn PDF document text
    • https://skl.deindrukdemo.nl/upload/files/pepetuxamebetov.pdfIn PDF document text
    • http://gibisch.org/files/files/68592045634.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.netReferenced by PDF JavaScript
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C6 11344 bytes
SHA-256: e13206b20623639383c4d6087ab39d16822783a689548f6addfc064b1d61811d
font_01_sfnt_off00011c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C54 18940 bytes
SHA-256: 1e60fac626bc1b6d7c08f7f57e51f5603596f1b26828aaa762e8749fedd894d5
font_02_sfnt_off00014d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D41 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.