Malicious PDF — malware analysis report

Static analysis result for SHA-256 7829c72eef526da5…

MALICIOUS

PDF

87.8 KB Created: 2021-08-20 00:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: d22fac37ca52a9c5c248b9caa2172568 SHA-1: 2f9bb1fab689abf14504eaca99156d01787c98b2 SHA-256: 7829c72eef526da5185dbefb569168f09f5a801f31524a912611589141e104e3
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 http://jaika.in/images/documents/files/23864256384.pdf In PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c6342429586---97426429765.pdfIn PDF document text
    • https://biocoop.legreniervert.fr/ckfinder/userfiles/files/mogoluwonone.pdfIn PDF document text
    • http://gptools.net/userfiles/file/pesifasififapajoxuxe.pdfIn PDF document text
    • http://potlista.com/file/files/24066631519.pdfIn PDF document text
    • http://cortabellanews.com/userimages/davexefaverax.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/2d1659f3220d52ae6556eeecf79a969f/45520824718.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607acf744318d---70235464913.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b0e69981b---81369795594.pdfIn PDF document text
    • https://heatingboiler.ca/fck_upload/file/12963459751.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa56744c7f---puvanix.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160760548a937a---1636322139.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/28f69c89f90246f7dd31781149b73433/piwazizadobunirogek.pdfIn PDF document text
    • http://thsport.dk/ckfinder/userfiles/files/sonirorapixupijabonajiv.pdfIn PDF document text
    • http://billsky.ee/files/file/nabovalikarupevo.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/u90q2nsmkjn1nef3u2obt2bf63/nekepadekevukefiru.pdfIn PDF document text
    • https://accidentmatters.com/ckfinder/userfiles/files/xofudosajowedume.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/vijarisitexolifopumomili.pdfIn PDF document text
    • https://firesystem.ro/imagini_ws/21990149451.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608808712b26a---zitumenus.pdfIn PDF document text
    • http://foto-video.ch/userfiles/files/dubakawusikiberivuledidez.pdfIn PDF document text
    • http://www.dkmodels.net/ckfinder/userfiles/files/getumoturuxidixabi.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/541b1734fa820801bd913762b35ba3ae/rires.pdfIn PDF document text
    • https://windsbs.biz/files/file/20593162521.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=runescape+2020+ankou+slayer+guide+07PDF 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_off0000f08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08E 11232 bytes
SHA-256: 71a15d8791b0adba047e32f1293e72f29de08bda7a06d7c99e016d5a1802b98a
font_01_sfnt_off00010ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE8 16844 bytes
SHA-256: b9318297823292728733c0a35c2c209a8281a2efb817fc4cc32c2a714ec8852c
font_02_sfnt_off00013670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13670 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1