Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e2ba36772d5e5b…

MALICIOUS

PDF

68.6 KB Created: 2021-09-25 00:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5b27ee5e444cf2ee2222b415f7d4bcd6 SHA-1: d804c15415acf838992add2146957664b596890a SHA-256: 65e2ba36772d5e5bbf12458d1f4036ca9ad97f73427cdb977263b6fee7dc842a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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.
  • 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 https://fundacjanadzieja.com/images/wyswig_images/file/fasebanogumupo.pdf
    • https://smartech.lv/sites/smartech/uploads/documents/files/31046588300.pdf
    • http://aaz.sk/editor_uploads/files/20779384967.pdf
    • http://ozanatalan.com/iboard/includes/userfiles/files/90300458158.pdf
    • http://amandatravel.com/userfiles/file/sewijufakisivofe.pdf
    • https://cfacgroup.com/uploads/FCK_files/file/98454596343.pdf
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/bde53768ecff83dede3ab12bf5d7b22c/xijivobakavatufagepa.pdf
    • http://zeguvietnam.com/uploads/ckfinder/files/19633336048.pdf
    • http://www.zdravotechnika.com/ckfinder/userfiles/files/mewikenivivarofivofonigix.pdf
    • http://tomboy2.com/images/library/File/3283176390.pdf
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/aacbcaefbb6bc7ab4b22b144d3596b5b/vanivoveralir.pdf
    • https://investkwik.com/userfiles/file/41774308284.pdf
    • https://acp-luxusingatlanok.hu/ckfinder/userfiles/files/petunokelajon.pdf
    • http://vitalbafitnessclub.eu/userfiles/files/widixofo.pdf
    • https://maggievanostrand.com/uploads/media/file/ravuroxutadazazaxu.pdf
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/labukerofegesepigawun.pdf
    • https://kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/95739580075.pdf
    • http://pes.edu.mn/ckfinder/userfiles/files/36045589113.pdf
    • http://aiaato.com/FileData/ckfinder/files/20210916_BF82C08C73934479.pdf
    • http://bamboomfi.com/htdocs/cljr/data/files/44134937739.pdf
    • http://ed-web.cz/userfilesfile/41490379570.pdf
    • http://lsmtrontractor.com/upfiles/file/20210909080637.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=world+war+z+pc+trainer
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afdd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDD 16792 bytes
font_01_sfnt_off0000c7f4.bin
19a5463c5671cae3d1082e8f2344cfc2f7106774788842f1abcaa2efc734977f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F4 10480 bytes
font_02_sfnt_off0000dfe9.bin
dfa5861d708df5e0867dad27eeebd7d8e8177e8f0e6b9cf4a835bd2eacdb87dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE9 14736 bytes

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