Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb67f9d62f929e20…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 00:14:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e4b7a1a0310a8623f1676cbce963aa6a SHA-1: 66a4483b9bcc5be7d0d7b341de29109e7fa5dfd0 SHA-256: eb67f9d62f929e2017eddb182912a98334dd04e87ec71a5ede583f6d59fec392
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency or hacks, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the embedded link is a common tactic for phishing or malware distribution. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

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/free-robux-money-no-human-verification-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/blue-stacks-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/como-tener-robux-con-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-in-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hacking-become-admin-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-sunglasses-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-mac-no-survey_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/guudinfo-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-you-hack-roblox_GM431946152.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_off00003136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3136 22684 bytes
SHA-256: acd9e2c3e8252a4a9f3c6f52e915dd9dfcf67bb2285288a6f88475c08d56995e
font_01_sfnt_off000063be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 19712 bytes
SHA-256: 3a3083534354c290b08366992c8c20e2f6c0012861da775b56abf7cbea213113

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