Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e970ff8e7c52a8…

MALICIOUS

PDF

68.9 KB Created: 2021-10-09 00:20:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: e377f23af0f6271ce17290e89f35b4c4 SHA-1: f9735063ea95e4136a16f9cd70eb10615ad5e871 SHA-256: 24e970ff8e7c52a8a3d2ae5953ed62b3e62c93c31101e58660486a9757acb467
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript, suggesting an attempt to execute malicious code. The presence of numerous external URIs, many pointing to disposable domains, indicates a likely phishing or credential harvesting attempt, possibly disguised as a document related to 'food and beverage inventory control'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://qlinairnv.be/userfiles/file/jamojerubatexeriwaradi.pdf In PDF document text
    • http://yejida.com/userfiles/file/73456639898.pdfIn PDF document text
    • https://bitree.ru/ckfinder/userfiles/files/19490977472.pdfIn PDF document text
    • http://vizugy.hu/uploads/files/499308910.pdfIn PDF document text
    • https://www.bankkartya.hu/js/ckfinder/userfiles/files/4767281949.pdfIn PDF document text
    • https://www.chablis-gautherin.com/ckfinder/userfiles/files/61488902581.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/jepez.pdfIn PDF document text
    • http://www.portaldasfreguesias.com/portugal/vianadocastelo/vianadocastelo/geraz_do_lima_sta_maria/ckeditor/ckfinder/file/47381516590.pdfIn PDF document text
    • https://alistairmills.com/ckfinder/userfiles/files/37470482691.pdfIn PDF document text
    • http://rtm-plus.ru/ckfinder/userfiles/files/91095597821.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/63571076976.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/e6b8ea7f351c13db02cc2598c62378de/18565428390.pdfIn PDF document text
    • http://hopkim.vn/upload/files/kajesokuzinamib.pdfIn PDF document text
    • http://www.prodomasa.com/ckfinder/userfiles/files/54667171000.pdfIn PDF document text
    • http://100gastro.cz/soubory/files/jusuvazuzameberivuk.pdfIn PDF document text
    • http://ateliergermain.org/sites/default/files/file/duxikufala.pdfIn PDF document text
    • http://n3ss.ro/ckfinder/userfiles/files/fibovizupagajutavopobili.pdfIn PDF document text
    • http://efrex.cz/files/file/91799397427.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/ruwutubosibatoroxudal.pdfIn PDF document text
    • http://pro-group.ru/userfiles/file/17713742380.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1615968d20033b---69019396125.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/nomivutorul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=food+and+beverage+inventory+control+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000af5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5F 14876 bytes
SHA-256: cb3e0191ddbfae061c36df4244a212154f6afd9714d4ee1c0d8db22d9495cc56
font_01_sfnt_off0000d4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E0 10924 bytes
SHA-256: 8d4786e3fd05bec32a4c804ede5e99c67740e8cb8306b1d7e7e3087908de20ff
font_02_sfnt_off0000ede1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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