Malicious PDF — malware analysis report

Static analysis result for SHA-256 23b9fc97065e9fac…

MALICIOUS

PDF

32.5 KB Created: 2021-06-26 17:57:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 58a97d2a28226cb6824adf88b98dd812 SHA-1: 40cb45cdb17f5003fa0c1f3ffbcb082f0c271f37 SHA-256: 23b9fc97065e9fac93c734f2cdd3c91e2b111c542684d017d50300c396fc72ce
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites offering game hacks and cheats, specifically targeting popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/all-free-in-catalog-roblox-game-hack, is flagged as a lure for game hacks. The presence of these links strongly suggests a social engineering tactic to direct users to potentially malicious sites, likely for malware distribution or credential harvesting. No scripts were extracted, but the PDF structure and embedded URLs indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/all-free-in-catalog-roblox-game-hack PDF link annotation
    • http://otomasi.stikesmuhgombong.ac.id/repository/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/in-roblox-how-do-you-hack-accounts_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/escape-room-by-devultra-cheats-roblox-forest_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-hacks-veiculos-simulator_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/pubg-uc-buy-online-pakistan_GM1330123889.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/my-roblox-account-was-hacked-they-spent-robux_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-reel_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/free-robux-in-a-second_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/play-coin-master_GM406889139.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/invisible-head-roblox-free_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-get-free-gear-on-roblox-high-school_GM431946152.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id//repository/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://otomasi.stikesmuhgombong.ac.id/repository/how-to-create-your-own-roblox-dominus-free_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_off00002b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5F 21708 bytes
SHA-256: 02d51d05e2e66e4e5311aa94a578dd7550d2e84eabba597688e4a62d8e3169a0
font_01_sfnt_off00005b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B02 18752 bytes
SHA-256: 73e46fe81130388ac0754092a7e9cc3b2474c54aedf8ce5c2ead0e465a108c66

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