Malicious PDF — malware analysis report

Static analysis result for SHA-256 09752ff4576d0be2…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 19:52:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64a3cf3ad21bafce09d1019010d797ab SHA-1: 7466951ee34af62d246469b4a3139ac25f0427dc SHA-256: 09752ff4576d0be2c6d2fa9136dc42336644724ddeb4f711728c8fc3c3b200b8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure to download a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL http://netcdn.tw/app/431946152/roblox-hack-2021-game-hack is likely the distribution point for the malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/roblox-hack-2021-game-hack
    • http://digilib.ulm.ac.id/pusat/repository/oprewards-points-generator_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/link-hacks-madpaintball-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-executors-for-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-who-to-get-free-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-september-2021_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/robux-for-free-pc-computer_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-roblox-printables_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-microsoft_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-hacktman_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/do-you-get-free-robux-with-builders-club-2021-bonus_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/pastebin-for-free-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-no-survey-or-download-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-free-online_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-bedrock-free_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-rape_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-gang-gang-gang_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-make-free-robux-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fa6.bin
03c8efe3269e4d8b57850246b54bfe710aa1eb3811afc02fbf28b8e0527d669b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FA6 22976 bytes
font_01_sfnt_off00006340.bin
98be41374c31724b7a878275a9dc475d7e9908887f4f5935c763b7161266aa61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6340 19056 bytes

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