Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ebc6ebf48908ea…

MALICIOUS

PDF

79.7 KB Created: 2021-09-07 09:15:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4fa241c7933321b97e81bbb4d5426b9d SHA-1: beea9c5ea3edacea12f3e862533270b2baa8360d SHA-256: 15ebc6ebf48908eaca743ee5a07e1e56e2a8a9f18f1ce05134f05c7c48be18ba
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, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous URLs that point to compromised websites, likely to lure users into downloading further malicious content or submitting sensitive information. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest a coordinated effort to exploit search engine traffic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6103

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://coretry.ru/uplcv?utm_term=reglement+interieur+entreprise+algerie+pdf
    • http://canigrup.com/userfiles/file/femejafewitatumezenorom.pdf
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/7f8cabe20b6167bd42474e86389a9045/paxanewogojo.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/eb25bb3773fe787bf0005c04a3706322/19338255215.pdf
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a11dcc0cd28---pifugugenazef.pdf
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a4e4b510ff3---nadufawiruza.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160da6f520a0ec---lufowudodake.pdf
    • http://exosportsante.fr/ckfinder/userfiles/files/simaximav.pdf
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/30dfae5932045693f1989a56b9c9fa96/78609112280.pdf
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/d9d41422e8aa10e8bffa4291110dd3f0/49391029168.pdf
    • https://speedwayinfo.hu/uploads/file/gemex.pdf
    • http://creativeindustries.ru/uploads/userfiles/file/69038679961.pdf
    • http://rakkhunnursinghome.com/user_img/files/talipifebanakovew.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609958435a21d---wekadimep.pdf
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/63110fb2df8d54bf78a073ace7491668/sifuru.pdf
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa64f9da474---23799676494.pdf
    • http://kirakuramen.com/uploads/files/74286266211.pdf
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a46fe62ca8a---11981120528.pdf
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/89332c5636d99be13dcffdce08eb6cf9/19133901744.pdf
    • https://systematix.pl/userfiles/file/vibozujoxirepize.pdf
    • https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/82927c8a93919a52b24d0979dbecd48e/xepumajorug.pdf
    • http://e-instar.com/userfiles/file/fopemolowizun.pdf
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0979aef421---pekewewutil.pdf
    • https://iiml-pgpsm.in/ckfinder/uploads/userfiles/files/10192839846.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a972cc98763---70663940174.pdf
    • http://zygzak.eu/foto_dane/wysiwyg/File/24980847794.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012986.bin
4190305bfc9b40ab88527cc80de4aed980a9f4cebf593116a883991a1778795e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12986 10864 bytes

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