Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0d747c8f6a854a…

MALICIOUS

PDF

79.5 KB Created: 2021-10-09 11:20:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 54a9aba45e3c6add0552956f24bca639 SHA-1: c009d4aa019a05216c27e60cd35877a7ebdd35f3 SHA-256: 2e0d747c8f6a854a7d66563348f5db79bc37e2e0b10acd5222119afb00edd873
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. It also features a link farm pointing to multiple distinct hosts, many of which appear to be compromised upload directories, suggesting an attempt to obscure the final destination or distribute payloads from various sources. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://arisutour.com/ckupload/files/47100373887.pdf In PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161442b13edf00---figugigu.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614811881e269---79561708933.pdfIn PDF document text
    • https://pieseautocomenzi.ro/userfiles/file/63161638467.pdfIn PDF document text
    • https://uslugiinzynierskie.com/eurostyl/photos/file/wijokivorejitevuzujujevu.pdfIn PDF document text
    • https://realxenon.ru/uploads/files/97392298247.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/xewexojabujagepefo.pdfIn PDF document text
    • https://chatsystem.site/js/ckfinder/userfiles/files/xowodinan.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614fd82ce98ed---kimenopadevib.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/wofeniruremolipesedux.pdfIn PDF document text
    • http://spbmedaks.ru/sites/default/files/uploads/rofufararewobuvosixo.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/41480012649.pdfIn PDF document text
    • https://paeonia.ch/userfiles/files/wasolugejibororululene.pdfIn PDF document text
    • http://nb-magnet.com/upload/files/ronedarowokikeked.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/a8d062f9aaab6b7cf962e14664fca450/bimevanejalikodo.pdfIn PDF document text
    • http://asqcert.net/files/files/27674404724.pdfIn PDF document text
    • http://hbaoge.com/upload/files/1520256703.pdfIn PDF document text
    • https://sklepbonus.pl/userfiles/file/15178852827.pdfIn PDF document text
    • https://akamercedes.com/images/uploads/files/lomupaxakuxige.pdfIn PDF document text
    • http://eventechsite.com/files/files/47923008057.pdfIn PDF document text
    • http://gernano.eu/gfx/userfiles/files/botubokunikarage.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/14047709877.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=hydrology+and+water+resources+engineering+books+free+download+pdfPDF 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_off0000db59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB59 19076 bytes
SHA-256: aba93ed9d166811e8d55dc72dbd23ce016765cdc5c62f6ee4555b52bcd1f2bcc
font_01_sfnt_off00010c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C84 11320 bytes
SHA-256: c5ba06ed850c7068ac15cba339d6a9dea986ad619ebda474085fd1c1faeb5094
font_02_sfnt_off000126d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.