Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b50183d4b94b8a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 01:41:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9463550f6a16e1a4a74244a6dee9b9c0 SHA-1: 9df2df3c2b651cb376c7b31b744b9b6a0d014258 SHA-256: f1b50183d4b94b8a0b57bd554e946bd5a154b225f5f2230ddfe0cca03d493963
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a game hack redirect lure, indicating a phishing or scam attempt. The document body explicitly mentions 'Roblox Work At Pizza Place Cheats' and directs users to download links, suggesting a lure to download potentially malicious software or engage in further fraudulent activity. The ML classifier also strongly flagged this PDF as malicious.

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-work-at-pizza-place-cheats-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/bloxburg-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-spin_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hacks-for-roblox-windows-7_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-blob-simolator-2-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/mad-gamer-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-robux-for-free-really-works-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/spin-rewards-coin-master_GM406889139.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_off00002f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F87 22816 bytes
SHA-256: be1a7310d735df13d456dbb24434c81b83667745b0f806246f72073c0c158d60
font_01_sfnt_off0000626f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 19480 bytes
SHA-256: 79068c3be06c0bec23e6fa87e0ff4a3e05e00998b3d8b797f62b553d649c9025

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