Malicious PDF — malware analysis report

Static analysis result for SHA-256 22e2d711f78b04a5…

MALICIOUS

PDF

43.3 KB Created: 2021-06-07 09:48:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5762727ed2c6249fb525f55d2d401fb4 SHA-1: 6437283bae9b4e686d9f84f408f5919b2f97f38d SHA-256: 22e2d711f78b04a5c9f396c3e1b59bca3de9972c9490be5a08ef728e063865c6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains heuristics indicating it links to a game hack redirector, specifically mentioning 'roblox-pizza-cheat-game-hack'. The document body, though heavily obfuscated, contains similar strings and URLs. This suggests a social engineering tactic to trick users into clicking a malicious link, likely leading to malware or a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/roblox-pizza-cheat-game-hack PDF link annotation
    • http://pastelli.gr/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-hack-into-nay-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-star-codes-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_off00004d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7C 24356 bytes
SHA-256: cb9f2f8fab13e11da6bfa293e65c89c4aff3681f6a20f9d8b8eb237a1964241b
font_01_sfnt_off0000856f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 18640 bytes
SHA-256: 5f23cd04de3289208793d9173b8c12ad157c47c55c6853033c409cafa26243b6