Malicious PDF — malware analysis report

Static analysis result for SHA-256 7701f0ab297258c1…

MALICIOUS

PDF

65.1 KB Created: 2021-09-26 23:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5606ff6d0eec2a93f2c2c965f8b0169b SHA-1: 347e025afcd4ac21dfe5b9af4f0c2d4f3982e9de SHA-256: 7701f0ab297258c10cd7c829a08b1b7d91f95bf53516f0b5af561b1ac22775a2
102 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, indicating an attempt to redirect the user to malicious websites. The ClamAV detection and the heuristic identifying it as a link farm on disposable hosting further support its malicious nature. The embedded JavaScript likely facilitates the redirection or exploits a vulnerability to execute further malicious actions.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4625

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
  • 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 https://laborke.ru/uplcv?utm_term=blue+my+mind+full+movie+english
    • https://htijsr.com/userfiles/file/betezixuje.pdf
    • https://luyenthitoeic.info/userfiles/file/36512494202.pdf
    • https://ce-mi.pl/uploads/userfiles/files/tukipiwutelikulem.pdf
    • http://blgjad.com/upload/files/16569284336.pdf
    • http://palami.by/images/file/rawuwipinazatipeses.pdf
    • http://chugguwang.com/files/fckeditor/file/62215546108.pdf
    • https://nmcs.ca/userfiles/files/nowuwagamaferagirotevo.pdf
    • http://ascensionchina.com/userfiles/file/41431437559.pdf
    • http://rootbeadmill.com/upload_fck/file/2021-9-9/20210909015941489231.pdf
    • http://ozdoby-betonowe21.pl/Upload/file/kifebosititisififerijod.pdf
    • https://technoarc.net/userfiles/file/85920487532.pdf
    • https://emprenderem.cl/files/22942916594.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613172c7bfe6b---41014482180.pdf
    • http://pb-book.com/user_file/file/62759895927.pdf
    • https://rtquery.reitoken.org/Coaching123/images/files/tebofolejate.pdf
    • http://phdpecs.hu/userfiles/files/40042257169.pdf
    • http://xhzhengli.com/upload/21031270472.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613de931ed936---38341416763.pdf
    • https://prestinieurope.com/userfiles/files/6942104347.pdf
    • https://corumosmanlimakina.com/js/ckfinder/userfiles/files/muliwixolifaxakedik.pdf
    • https://pre-www.bridge-college.com/uploaded/ckeditor/files/buzopazirolikiv.pdf
    • https://gloriamus.org/Uploads/userfiles/files/bimuzojikerukatipigugo.pdf
    • http://geose.ru/userfiles/file/19006868748.pdf
    • https://camping-du-lac-dijon.com/userfiles/fichiers/86858268144.pdf
    • 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_off0000bff2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF2 16792 bytes
font_01_sfnt_off0000d809.bin
70bcc986313e27b1b2d00cf9ac3a661d55d265dc7186ff22977c4331af1d71df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD809 10772 bytes

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