Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae70ae604dd98351…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 01:50:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 22a3d608b95103df6afa5be356d1551e SHA-1: a1802d90c04e91bf04f853cdee80e6ca1a8a187a SHA-256: ae70ae604dd9835178d049c17e57882708cf3293d39d309aff48b2f704280cf2
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with a malicious link. The document body and extracted URLs suggest a theme of free game currency or cheats, a common lure for phishing and malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/free-roblox-codes-2021-not-expired-game-hack
    • https://inspiration-modellbau.de/images/how-to-get-robux-for-free-for-children_GM431946152.pdf
    • https://inspiration-modellbau.de/images/free-coin-master-spin-app_GM406889139.pdf
    • https://inspiration-modellbau.de/images/minecraft-java-edition-download-free_GM479516143.pdf
    • https://inspiration-modellbau.de/images/comandos-de-hacker-roblox_GM431946152.pdf
    • https://inspiration-modellbau.de/images/how-to-make-free-shirts-on-roblox_GM431946152.pdf
    • https://inspiration-modellbau.de/images/robuxmaniac-com-free-robux_GM431946152.pdf
    • https://inspiration-modellbau.de/images/coin-master-hack-version-2021_GM406889139.pdf
    • https://inspiration-modellbau.de/images/xyrex-roblox-hack_GM431946152.pdf
    • https://inspiration-modellbau.de/images/free-cafe-groups-on-roblox_GM431946152.pdf
    • https://inspiration-modellbau.de/images/coin-master-hack-tool-access-online-generator_GM406889139.pdf
    • https://inspiration-modellbau.de/images/hacked-roblox-accounts-list_GM431946152.pdf
    • https://inspiration-modellbau.de/images/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://inspiration-modellbau.de/images/free-face-items-not-model-roblox_GM431946152.pdf
    • https://inspiration-modellbau.de/images/robux-fun-hack_GM431946152.pdf
    • https://inspiration-modellbau.de/images/coin-master-free-spain_GM406889139.pdf
    • https://inspiration-modellbau.de/images/hacking-simulator-mobile-update-codes-roblox_GM431946152.pdf
    • https://inspiration-modellbau.de/images/como-hackear-roblox-prison-life-20_GM431946152.pdf
    • https://inspiration-modellbau.de/images/rbxcity-free-robux_GM431946152.pdf
    • https://inspiration-modellbau.de/images/roblox-parche-cheat-engine_GM431946152.pdf
    • https://inspiration-modellbau.de/images/mcpe-com_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005089.bin
6391289a5115e7c43e56e2a055e4a9447feb2fe556719ce3ca6160c8f9bfaaec
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5089 27192 bytes
font_01_sfnt_off00008da4.bin
375effc9770ceb8ae67b1a95e6b6e4d2d9e1b4e6f0e9f165dbc847199518b1a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA4 18924 bytes