Malicious PDF — malware analysis report

Static analysis result for SHA-256 0979d0c4f4a20705…

MALICIOUS

PDF

90.1 KB Created: 2021-08-24 21:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ea1c1f33fb1f69446fa48032d0221b9c SHA-1: 2aaafbcfdbb5eb3b068031f56922c5a96aa7bbc5 SHA-256: 0979d0c4f4a2070506ae303d6a0b4918fbfa7ca1a69a97696f80c60a85306cc9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to distribute malicious content. The ClamAV detection and ML classifier further indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6185

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://belv.ru/userfiles/file/931148023.pdf In PDF document text
    • https://makenie.com/upload/files/suredubo.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/844d130cf6084672eb7487ad9b135269/52631210520.pdfIn PDF document text
    • http://affordableadobe.com/ckfinder/userfiles/files/45788618846.pdfIn PDF document text
    • http://say-international.eu/userfiles/file/59808621681.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/wudimisote.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/zidozesusugasakewadixita.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/68057845343.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/cba1894e5927bb6c64ff80a011d5796d/50504832047.pdfIn PDF document text
    • http://hornets88.com/clients/56662/File/63682899144.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/05335266bac418c29a2434e279ee996c/95768201428.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a92a7e50c23---dutunabemidolalu.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b9b43edb4---8548207355.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/81d3236933b1f488e707ecf136e81e3b/midovazopidetufukizine.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/p427oqe0tq58qjk7bj1ils1i65/pojobojobaritox.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160746092256b7---70758041726.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/tumubutejipot.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/11771904866098ce210990d.pdfIn PDF document text
    • http://foto-preiss.at/upload_files/files/49144759022.pdfIn PDF document text
    • http://richardchong.com/userfiles/files/19720992079.pdfIn PDF document text
    • http://tele-video.ru/upload/files/xuzavidogexamiwudatiw.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/jodugorenakunapizuta.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/ea6b6ea65c1b482cbe0b25c6f8969d53/pagomizob.pdfIn PDF document text
    • https://lokmangal.co.in/wp-content/plugins/super-forms/uploads/php/files/8b1cf5516ccce1bbd46bd147724713e2/sudalasibefakojifavole.pdfIn PDF document text
    • https://gannat-ltd.com/userfiles/file/12522800407.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c127b2bf34---tisofumofubuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=oxford+advanced+learners+dictionary+9th+edition+pdf+free+downloadPDF link annotation
    • 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_off0000f578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF578 17840 bytes
SHA-256: bd742fdbb121885fb6ef65bfac377cd05840eb13555c7f67e0af09a80d26e8d5
font_01_sfnt_off00012480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12480 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C97 11280 bytes
SHA-256: dc2c1dd1ad3dd065acf2c0247485663a780e29cd9f2af008235fc2895d87bc39