Malicious PDF — malware analysis report

Static analysis result for SHA-256 48410a0e120410e5…

MALICIOUS

PDF

41.2 KB Created: 2021-05-13 15:55:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e7495c736e5be6b72ad85f0c06b0b545 SHA-1: 0a7ca10409dab595463c9fdb9d39a9a58f90b0ce SHA-256: 48410a0e120410e526354d105edc2bf89bf4d3f14bdd2f3a67edbc2cc6c98b60
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it's a lure for game hacks and redirects users to external URLs. The document body, though partially corrupted, contains text related to 'Roblox' and 'game hack', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent, likely to direct users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-accessories-roblox-game-hack PDF link annotation
    • http://ikig.ru/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://ikig.ru/images/blox-rewards_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://ikig.ru/images/roblox-free-bundles_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://ikig.ru/images/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn 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_003_off000045c1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45C1 25304 bytes
SHA-256: 99f1a670fb86ab99896bc23a0469f923cdc75e0a1dfbff027fffb7c5c20a7e3c
font_01_sfnt_off00007f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F76 18068 bytes
SHA-256: 1bea2de0f546621612e5e0cbd01172ecf5f1ab9f5485e5c32d3a5168ac155f59