Malicious PDF — malware analysis report

Static analysis result for SHA-256 f99690c1d7e42922…

MALICIOUS

PDF

63.7 KB Created: 2021-07-28 06:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: 85d12f5fea6bbbd4abc2bf87ea18a568 SHA-1: da0aa1e6db41fe835d105c78f5d9a67965b3e1dd SHA-256: f99690c1d7e42922384d19aa501357c836d3ac01c1db23870c073296c3123b2a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample was identified as malicious by ClamAV and an ML classifier, indicating it likely contains malicious content. Heuristics reveal it functions as a link farm, with numerous URLs pointing to potentially compromised WordPress sites and other domains, suggesting an attempt to redirect users to malicious content. The PDF's structure and embedded links align with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7964

Heuristics 5

  • 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
  • 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://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec9b2ccb0e9---toketerora.pdf In PDF document text
    • https://medtek.vn/storage/file/dedegodasilinofinur.pdfIn PDF document text
    • http://elvirajogsi.hu/ckfinder/userfiles/files/55918108383.pdfIn PDF document text
    • http://lulanjina.net/upload/files/89095059434.pdfIn PDF document text
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075cfe80789a---motaz.pdfIn PDF document text
    • http://blesk-stroy.ru/userfiles/files/22727091300.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16072a390cd16d---werepirof.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/dofopomunarotogufulowaj.pdfIn PDF document text
    • https://www.lightingsolutionsal.com/wp-content/plugins/super-forms/uploads/php/files/a4a99c308c9e910f69b1dfa29fa413c5/nosefuwakomebiwafok.pdfIn PDF document text
    • http://feach.ie/images/uploads/file/bawamo.pdfIn PDF document text
    • http://lbhodgereunion.com/clients/3/38/38e1f81cb1ac74d12d86c8ba87866b9f/File/jegifibovabajemobebixita.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/25450906025.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160863fef82733---45305721471.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/aa8bce29fb1eb4ddcf91fd078f96b30d/vobumupelerugipifuza.pdfIn PDF document text
    • http://rebizplus.com/userfiles/file/fifowigenejuxegad.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/f04007e5a8f12e7180dbb2bb6d6322a4/4373976268.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160bd33f590468---webakokubugef.pdfIn PDF document text
    • http://www.tomasjelinek.com/img/pub/file/nifinotanovofor.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/bct30h81n02rd92tbdmrt8jmpk/60766407622.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/41387697874.pdfIn PDF document text
    • https://www.rockfallco.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8e1a18b7d---27648227279.pdfIn PDF document text
    • https://hglobaltourb2c.com/FileData/ckfinder/files/20210623_D444BE61FA368C45.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=is+bread+business+profitable+in+nigeriaPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE577 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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