Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bedd630a795a119…

MALICIOUS

PDF

116.9 KB Created: 2021-07-25 16:02:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: a8fd593330194cbf67bf2bffd00642b9 SHA-1: d9ad42e87900de6e0e1d86c7dda7ffacc661d920 SHA-256: 6bedd630a795a119468dc1cc2f0bd144e3f5cdd253cd1a030c330909bcafa7ba
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm directing users to numerous URLs, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple links on potentially compromised sites suggests an attempt to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 https://selltoob.in/ci/userfiles/files/vuzusuvoso.pdf In PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/f558a6f10049f89f45a3efcc14b430e6/tarefubojelosalezote.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a7b31e823---26636727263.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/5kdsag3a70lddcclt50bsdfgmv/35572746345.pdfIn PDF document text
    • http://gistys.com/userfiles/file/36701592731.pdfIn PDF document text
    • https://avenue102.com/uploads/file/vedixolotopunemefimim.pdfIn PDF document text
    • http://1984wnhs.com/clients/2/25/250e0aaa51dad033202e6c34d8602b4d/File/91494178507.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/e503ffe3df0bc651d9ccdbea70c184a8/wilitejividasaxurelul.pdfIn PDF document text
    • https://liur-krd.ru/userfiles/file/52390327073.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a1ae178b4---25034250873.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/fadogi.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160720ef2dad56---14973981536.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a045f166e---bijopedetujizelopexiw.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/3f5e4015729207b52ec379426771402d/24402336290.pdfIn PDF document text
    • https://toskov-yordanov.com/userfiles/file/81242390430.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/gdntn2r0ghggnvjmiqso4f28qf/zizugokugejesub.pdfIn PDF document text
    • https://wisserarm.nl/app/webroot/files/userfiles/files/39353347390.pdfIn PDF document text
    • https://anaksemut.com/contents//files/lajutapoderexiguwajorix.pdfIn PDF document text
    • http://liubeauty.com/luutru/files/vamagonavufaku.pdfIn PDF document text
    • https://www.db-ynox.fr/ckfinder/userfiles/files/69334596979.pdfIn PDF document text
    • http://chikatere.com/Upload/files/sinit.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/a495e1266713f8faf3c1b151d045a82b/40518803658.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160b01820b5ca7---guvefos.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=descargar+el+hobbit+2+latino+megaPDF 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_off0001603a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1603A 19976 bytes
SHA-256: ad01d8d5405ec2c152400a34f29447cbc60f596d12bb7c66095efe892443a152
font_01_sfnt_off000193f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x193F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001ac07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC07 10940 bytes
SHA-256: 24b17e8965cab831ca69cf2c4ffcd58308137dd1d2682f5a0ac08026f20b6599

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