Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f810bc5e71e6574…

MALICIOUS

PDF

86.9 KB Created: 2021-09-21 12:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 08028ae37460363cb1b17e6debed5cab SHA-1: c91c42076c19408b97f31e719a2205163b497f55 SHA-256: 2f810bc5e71e657431d7fd3e9557de568a4bd47c960cc0805a22d36b221943e8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains embedded JavaScript and multiple external URIs, including one identified as a link farm on disposable hosting. The presence of JavaScript suggests an attempt to execute malicious code or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://www.jindatunnel.com/up_files/file/jidefafemuwojuzedavi.pdf
    • http://pijntherapie.be/uploads/files/145422615.pdf
    • http://depcip.com/app/views/panel/ckfinder/userfiles/files/bodanonodumizijigaxoga.pdf
    • http://ydtmuhendislik.com/ckfinder/userfiles/files/malikurugabijiduji.pdf
    • https://cosmopolitanhotel.eu/uploads/wysiwyg/files/58783854191.pdf
    • https://motoralbini.it/files/file/61260941017.pdf
    • https://xn--fct5g39pjpo.tw/upload/leakstop/files/soxedasale.pdf
    • https://malayalamfoundation.org/admin/my_files/file/25852820722.pdf
    • http://kpotplace.com/uploads/files/49593242309.pdf
    • http://sjmhospital.org/files/js/ckfinder/userfiles/files/faleri.pdf
    • http://www.uc-kushiro.net/images/library/File/dewerululokesogafem.pdf
    • http://dalhousieretreat.com/cote_dor_import/admin/ckfinder/userfiles/files/wubidotumuv.pdf
    • https://agrocare.ro/ckfinder/userfiles/files/8231960792.pdf
    • https://phongkhamtamthan.net/uploadeditor/files/97314755219.pdf
    • https://jungleflightchiangmai.jungle-flight.com/Uploads/files/47809479235.pdf
    • http://suurelepa.ee/data/file/8877913435.pdf
    • http://5thaveseniors.org/userfiles/file/dagut.pdf
    • http://anabakorea.jp/userfiles/file/98134036484.pdf
    • http://kleinschaden.expert/userfiles/file/86559821758.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/5shodpauvhm38lcb81m0uuu9q07s81je/rijamuneforepolive.pdf
    • http://budaikepkeret.hu/uploads/file/nafiz.pdf
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/d1u07honk96jrb4gnvhqcktka3/71439531895.pdf
    • http://kozhencherrymtc.org/userfiles/file/78075624348.pdf
    • http://webspace.mysdam.net/images/newsletter/files/wuxudojada.pdf
    • http://magic-mugs-factory.com/uploadfile/files/8217443543.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=xbox+360+emulator+android+2019
    • 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_off0000e76f.bin
edf6959e0680351fa619d52d3af9b1b8d39cf9283c19a4cf8b7afef023e3ffb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE76F 19884 bytes
font_01_sfnt_off00011af8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF8 16792 bytes
font_02_sfnt_off0001330f.bin
7eb2b242adc75033614f4c9fb81ac6d9eaf543a8f56ca10a74265dd0a1a5b11f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1330F 11392 bytes

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