Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b99bec0c156d404…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 18:49:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8df12a9df674aa7ed7c6eacefcbf98c3 SHA-1: 01babdafdb7465b757c8e39ea200174afa3d137a SHA-256: 4b99bec0c156d404fe92cc5cc08b64cd3b8a60fed41aa45176fe0e33feadb5a4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The document body and embedded URLs reinforce this, pointing to sites offering 'Roblox Synapse Hack' and similar cheats. The primary IOC is the malicious redirect URL found in multiple heuristics and the document body.

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-synapse-hack-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-the-dump-work-at-a-pizza-place-money-hacks_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/cheat-enginge-how-to-make-roblox-not-crash_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/mediafire-hack-30-robux-gratis_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/download-free-mods-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-leggit_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/gamekit-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/pubg-uc-myanmar_GM1330123889.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/survey-robux-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-get-free-robux-legit-2021_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_off00003102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3102 22356 bytes
SHA-256: 39bc697258d4207043c5887d88e9e5a61a91794b8e39150c0df25798355de219
font_01_sfnt_off000062c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 19012 bytes
SHA-256: 3382886592bb468489b95c1f4c613cd1f169f54b8051a514a613a8a03f1c7aa5

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