Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9f1fc666d8108f…

MALICIOUS

PDF

77.6 KB Created: 2021-07-18 03:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 09c900878d77a2c3f680b2500b1d25dd SHA-1: c448a88c7274ad5d674219ad0a8f7f68e3d8d92e SHA-256: ee9f1fc666d8108faa27729e1c600b71466a46266e47aad21a04dafde593991f
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links pointing to compromised WordPress upload storage and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to redirect users to phishing sites or download further malicious content. The embedded JavaScript is likely responsible for executing the malicious payload or facilitating the redirection.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3127

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/obu2an46idkfm7p1ihro0mscg6/60053191706.pdf In PDF document text
    • https://anmimar.com/royal/userfiles/file/tebedakap.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/jotaguwemidozex.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/48931148405.pdfIn PDF document text
    • http://lyonsmcafeereunion.com/clients/a/ab/ab8eb7fa8d7cf94b91f67e7e346c80ed/File/81633648636.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/ugpj0l0ej7qqau7i6bnh2kk923/tanaxulijematijomomivu.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16082f9a253612---49431173211.pdfIn PDF document text
    • http://csc-0898.com/userfiles/file/20210703061607_ycuvjn.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/fac7e9a91ae4a4359e59e6d68d33a108/lujalakiweziw.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/37d0f23bd96b3fb3fe4b03d9a4dcad6b/95958488511.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/dalubisebimutemabi.pdfIn PDF document text
    • https://www.movingwithmagna.com/wp-content/plugins/super-forms/uploads/php/files/a25565fda997033eaa8f6081d9e9dcaf/99265805854.pdfIn PDF document text
    • http://mnogonomerov.ru/uploads/file/mizadetelomajapixosi.pdfIn PDF document text
    • https://hoakhanh.vn/uploads/image/files/12179503043.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f375fb3d91---96415307762.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/3npf8v7aog0mjipob54kaq3pm3/65867703751.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/lum171f9kggk98m43i5f7eokra/63126302456.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/5cb2d757d19a06869844b158f58300ef/japepojizatinekeme.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609431680bc92---digolemifoteposenuzewu.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5a57a22b---delufituf.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/rilewimododu.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/bb5048ee6fa21b4e1bc9dee58439c8a2/23086068565.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/dixukasigaxajutazama.pdfIn PDF document text
    • http://renovator.cz/files/file/menagiropirakigaw.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608110f40ab77---94735970989.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/42134844533.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=acca+previous+question+papersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f29a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB1 10616 bytes
SHA-256: 09d97aac4350edadda457dbeddbf6d38e8643dd3b54e10f3436390bc03f9e2fc

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