Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbee320ea07fd8a…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 05:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 2117727b4f53711020a4b18aff0c4335 SHA-1: b7c3a195789b386ebce9e5d6439a6e75b2000c7a SHA-256: 8dbee320ea07fd8a0f0c127b9636793050c928b7eb7987046fea3d8e0125ee0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a game hack, directing users to a suspicious URL. This URL likely leads to a malicious website designed to exploit users or deliver further malware. The ML classifier also strongly indicated maliciousness.

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.tw/app/406889139/coin-master-hack-without-verification-ios-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/i-got-hacked-in-weird-writing-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-cheat-glitch-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pack-free-maps-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-real-hack-robux-real-encrypted_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-v3rmillion-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/buxblast-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robux-hack-with-inspect_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/como-hackear-gente-en-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
stream_002_off000031c8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C8 22908 bytes
SHA-256: 9f85c034deb98e3ee2ba2da860a1563eb5cf9d252e8839a61360de22fc2cab27
font_01_sfnt_off0000654f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654F 18640 bytes
SHA-256: 64a400970c20ba482c05e66d71a074a4c330a08b074eebceb79599f70862a40f

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