Malicious PDF — malware analysis report

Static analysis result for SHA-256 1369cc58448433cd…

MALICIOUS

PDF

47.0 KB Created: 2021-06-08 12:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 28c7b9788c9470eae263ccb85f171055 SHA-1: 6d61898fb6cae36660fe3ccacaa20698cdfdaad6 SHA-256: 1369cc58448433cd8128ab6f58c24f3ddf2ab1b2708b207828cd3105c073b206
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure to trick users into interacting with malicious content. It also embeds multiple URLs pointing to websites offering game cheats and hacks, suggesting a social engineering tactic to drive traffic to potentially malicious sites or download unwanted software. No scripts were extracted, limiting further analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-cheats-to-get-2021-robux-game-hack
    • https://alimi.com.tw/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdf
    • https://alimi.com.tw/upload/files/robux-free-2021_GM431946152.pdf
    • https://alimi.com.tw/upload/files/mcpe-master-hack-coin-apk_GM406889139.pdf
    • https://alimi.com.tw/upload/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • https://alimi.com.tw/upload/files/free-daily-spins-coin-master_GM406889139.pdf
    • https://alimi.com.tw/upload/files/robux-free-c_GM431946152.pdf
    • https://alimi.com.tw/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdf
    • https://alimi.com.tw/upload/files/free-minecraft-addons_GM479516143.pdf
    • https://alimi.com.tw/upload/files/free-robux-on-phone_GM431946152.pdf
    • https://alimi.com.tw/upload/files/coin-master-free-spin-ml_GM406889139.pdf
    • https://alimi.com.tw/upload/files/roblox-studio-free-robux_GM431946152.pdf
    • https://alimi.com.tw/upload/files/how-to-get-unlimited-robux-2021_GM431946152.pdf
    • https://alimi.com.tw/upload/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://alimi.com.tw/upload/files/free-coins-for-coin-master_GM406889139.pdf
    • https://alimi.com.tw/upload/files/how-to-hack-pubg-uc_GM1330123889.pdf
    • https://alimi.com.tw/upload/files/roblox-hack-generator_GM431946152.pdf
    • https://alimi.com.tw/upload/files/free-executor-roblox_GM431946152.pdf
    • https://alimi.com.tw/upload/files/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • https://alimi.com.tw/upload/files/coin-master-daily-free-spins-link-app_GM406889139.pdf
    • https://alimi.com.tw/upload/files/coin-master-extra-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050a4.bin
33940e1e1d9522534bfd7a60792bcecbd75da6e39b87118ae1058c732e0fcc1d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A4 29080 bytes
font_01_sfnt_off00009379.bin
e518c6b68fe70692211618f6f3b6a39e6816ea7787ded4f47a66851601ad1978		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9379 18824 bytes

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