Malicious PDF — malware analysis report

Static analysis result for SHA-256 28173ef6c6750a07…

MALICIOUS

PDF

34.1 KB Created: 2021-06-30 01:07:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1c354f691802fa17f33fae4b63552b8e SHA-1: e97ecb617c9318fd7d54f9abb58af64211837622 SHA-256: 28173ef6c6750a07af39ecbc8ebd2c01ae98179447f290b96fa86966fd3778fe
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on malicious links. The document body and heuristics indicate a clear intent to redirect users to sites offering game cheats, which likely leads to malware download or phishing. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/431946152/roblox-robux-hack-apk-2021-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/roblox-18_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-25k_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/dantdm-code-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-have-no-pants-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/bleach-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-private-server-roblox-strucid_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-download-roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3D 21936 bytes
SHA-256: 05e746d3a5582ae9dd70b24c61b919c6e0434521b02300807ece92b28140daec
font_01_sfnt_off00005ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE2 19372 bytes
SHA-256: ac3e97d24d443fa2cbbaf8a3aa1d91673b13564cab9a3d7a87b887176588674e

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