Malicious PDF — malware analysis report

Static analysis result for SHA-256 85796d4686733f0b…

MALICIOUS

PDF

97.1 KB Created: 2021-07-19 04:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 45bebfff8ebdb23d27161eca34f61f44 SHA-1: 8a9b3295f57bcc7b25eec6d39a98452e412389e2 SHA-256: 85796d4686733f0bafb442c7225d1f9d8797deb734199ed7705f2c981f67da43
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS upload storage, suggesting it functions as a link farm. The primary purpose appears to be directing users to potentially malicious or phishing websites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5653

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 https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/q851ii8ouuq0btu0lccs6p9er3/jodasowakevu.pdf In PDF document text
    • http://gat-asset.com/CKEdit/upload/files/varidisivixap.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607460895a140---gamidozekekufat.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e6aebfe7205---59026403040.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/sawexadusuvuvagafi.pdfIn PDF document text
    • http://computergramm.com/userfiles/file/vasulodizolaz.pdfIn PDF document text
    • https://civilkontroll.hu/uploads/file/wedokimo.pdfIn PDF document text
    • http://africareview.in/userfiles/file/polomolosalasijini.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021051006183068.pdfIn PDF document text
    • http://fst-uinsu.net/userfiles/files/73680075262.pdfIn PDF document text
    • http://fw-simple.com/uploads/files/6438219962.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/6uv56i0uhm3p4ik8vutpo9mnh5/pizojuf.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/cf5ddd96863b2be4b16540142671e5be/67285409430.pdfIn PDF document text
    • https://www.duffylighting.com/wp-content/plugins/super-forms/uploads/php/files/1561bad526151082105481abbb4ac5f9/zomuzipepixi.pdfIn PDF document text
    • http://unicaconsultoriarh.com/images/files/xixapujiponodesadojekaf.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/76673073fdc9153c8c25ad41baaa8176/83054757391.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202106182126073489.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160749a683c7a3---gidiwonuzupuvatefef.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/1d95509be3ea49cc5d39805383adc13a/ruzeroraloruz.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3d0759a1d6---zakowasifodonugizibijolo.pdfIn PDF document text
    • http://seanmore.com/userData/board/file/bebelawod.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/4k9u4fr7ni360fqo59vr682eqv/13216472419.pdfIn PDF document text
    • http://solee.cn/ckfinder/userfiles/files/gezotujobesuwuboxulig.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16098bd758ba30---salefijolabasuke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=best+states+to+go+to+collegePDF link annotation

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