Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e55b7cfeb6aff1…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 22:04:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e0ba8db1fe597bc1847988b4ae520832 SHA-1: af83ab847ff97ab37f13bf2279ffec788616d736 SHA-256: b9e55b7cfeb6aff188ea89ef2d0adde395ae818673551b6db0dd0efe4f7486cf
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into interacting with a malicious link. The embedded URL and numerous other URLs within the document body point to sites offering game hacks and cheats, suggesting a social engineering tactic to deliver a payload. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/how-do-you-hack-roblox-game-hack
    • https://man1tuban.sch.id/__statics/gudangsoal/files/minecraft-gun-games-free_GM479516143.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes-not-used_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/hacks-for-coin-master_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-2021_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-trading-group_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-hack-ios_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/robux-offers_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-free-redeem-code_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/coin-master-cheats_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/can-you-actually-get-free-robux_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/robux-best_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdf
    • https://man1tuban.sch.id/__statics/gudangsoal/files/roblox-generator-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aff.bin
d5cdf260b66de7c067569733a7846d539f452a82ce094c2c5e72760a8d4a4fb2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AFF 24784 bytes
font_01_sfnt_off000083e2.bin
d27b94fe1a8c05d6feb56d9a091a96145976f0feb7173cb46f16c8470fe3a7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 18816 bytes

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