Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1724870fb616340…

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 22:49:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 076bf9b3c32122921cbb9d4450ac3b35 SHA-1: cec0a03a3b0bc8bd2d126ef5c3df63b6fa749303 SHA-256: e1724870fb616340342120b37d9929228ac380b02793698a573f4afb5bd7d49d
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 'free generator / game hack' which redirects to a malicious URL. The ML classifier also flagged this PDF as malicious with high confidence. The presence of multiple links to similar scam-like content suggests a phishing or scamming attempt.

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 https://netcdn.xyz/app/479516143/minecraft-rtx-download-free-game-hack PDF link annotation
    • http://radiobuku.com/ipoestaka/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://radiobuku.com/ipoestaka/repository/roblox-army-free-robux_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_003_off00004b57.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B57 29504 bytes
SHA-256: 2a6e91b32d01652c94a2d94e43f47b2c8516a9ecabc64d87265b8972a07f2ff7
font_01_sfnt_off00008dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DAB 18500 bytes
SHA-256: 5f3bdd779ddaacede8957d9864e28e9a9e9e2ea303e248dbf894cd003605836d