Malicious PDF — malware analysis report

Static analysis result for SHA-256 719c6922cfe1dceb…

MALICIOUS

PDF

63.6 KB Created: 2021-09-19 14:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2c83b29a6c4f5d6d558615388b6111a3 SHA-1: 916f6f9aa1ac8b917810783e1152f27734f30c0f SHA-256: 719c6922cfe1dcebdc103008af21b19606e5707b302b7b85446ccf276ff2ad9a
132 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. The presence of numerous external URLs, many pointing to disposable hosting and exhibiting link farm characteristics, suggests an attempt to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8566

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://crewmak.ru/uplcv?utm_term=difference+between+iphone+and+android+phone
    • http://www.prodomasa.com/ckfinder/userfiles/files/bifuwefesexesofazamom.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161397a8e00a8c---86394075321.pdf
    • http://teakdeck.pl/files/file/rusutafotolamegorozagisez.pdf
    • http://lonniestireandauto.com/nbloom/fckuploads/file/17233343738.pdf
    • http://trovas.com/userimages/77820241761.pdf
    • https://christianklein.eu/Quansis/ckfinder/userfiles/files/77707783514.pdf
    • https://www.sacict.or.th/ckfinder/userfiles/files/19149884893.pdf
    • http://vattucongtrinh.com/userfiles/file/85908511675.pdf
    • https://travellifeafrica.com/ci/userfiles/files/4438515382.pdf
    • http://camberwelltaxi.com/survey/userfiles/files/pizaxupiraxebukutikubetef.pdf
    • http://etasystem.net/userfiles/files/53955594964.pdf
    • https://bhsbeacon.com/FCKeditor/file/faleniludez.pdf
    • http://ozona.pt/js/fckeditor/editor/filemanager/connectors/wysiwygfiles/file/13207913630.pdf
    • https://anne-berger.de/sites/anne-berger.de/files/fkcfile/kuxoruxapivew.pdf
    • http://theseadiaries.com/ckfinder/userfiles/files/93201735785.pdf
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/biwokega.pdf
    • http://pro-roubenky.cz/UserFiles/File/tezama.pdf
    • http://tbff-bygg.se/img/files/22467477020.pdf
    • https://bodymason.com/user_uploads/files/komuwasipawoxagidolaxe.pdf
    • http://profstil.az/userfiles/file/datozovumorazavomez.pdf
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/32659458562.pdf
    • http://gesundimjob.at/images/content/files/66433178844.pdf
    • https://bibonatura.hu/ckfinder/userfiles/files/58040230103.pdf
    • http://pilot-market.ru/new/files/file/37442747930.pdf
    • https://maciejabramowicz.pl/upload/files/file/zisokut.pdf
    • http://csc0535.com/userfiles/file/20210917001627_68av5j.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_off0000d66d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD66D 16792 bytes

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