Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f6206556ace675…

MALICIOUS

PDF

79.0 KB Created: 2021-08-08 10:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 542daeb380be9b865573ec0d5a5cb30c SHA-1: c03887bafd1ad0456f3b9d3146e6fd11fc7cfc7b SHA-256: 69f6206556ace675614be5b5b0a874bf6adb1cfe2e68e83af5c210d94eb020d5
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress upload directories and other disposable hosting. The primary purpose appears to be directing users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

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://diskacme.dk/images/upload/file/93685703779.pdf
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/8telitit7e31o14h0d2m2sdo1a/67863142143.pdf
    • https://almondzwealth.com/administrator/imagetemp/file/61933644595.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/2114da664d4c349104e9dbfc53903af7/muxanirirebutodonu.pdf
    • https://www.adoz.cz/ckfinder/userfiles/files/51722646389.pdf
    • http://wsm.hk/images/uploadfiles/file/jolupawimetugofipadi.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/0070906d66a5c71b0f1d905926db3681/dovexopezuxikageko.pdf
    • https://nadamasristorante.it/file/xolusofajokafavagig.pdf
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089dbe7f4103---81831507756.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/621fb97a402ca8c088046b010e6570fe/63974280800.pdf
    • https://www.sehersirin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b91816edad---6465365186.pdf
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2a7324103---38400740285.pdf
    • http://3xlove.com/uploadfile/file/fidepiduwemudoxor.pdf
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099952f6f123---80715198102.pdf
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/8cc37f1a74403ca9f5e9b08ec6f1ea99/26820028635.pdf
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606eefded2a88---49465180077.pdf
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/cd464330b3ee47320939fccaef9b78a5/toxadexaf.pdf
    • http://sgd42.ru/userfiles/file/merebafiripebanojefiruw.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af5cebbe30a---88698465785.pdf
    • http://trendybiz.in/usersfiles/file/zovexuxawi.pdf
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609719491075e---41291331550.pdf
    • https://goodline.by/userfiles/file/tudukaxusafegewex.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2465f3148---jawolize.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+join+kdf+as+a+cadet
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f88.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 16792 bytes
font_01_sfnt_off00012799.bin
4a1e3041f8103a7d4e2e75db273aef650521616ab0c63d2aa14cc79fae449a56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12799 16324 bytes

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