Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79e2028a2231735…

MALICIOUS

PDF

47.6 KB Created: 2021-05-18 00:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ea00fe3f1dff9018800a92b454cf9b3c SHA-1: 146e8cb34229b3e0118a58cbddd1630a45a35ac2 SHA-256: b79e2028a2231735989a7a0fdfca472e447a2f0527a09652c52adb2db04c91d9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with the document. It also embeds external URIs pointing to potentially malicious content, such as game hacks. The primary URL identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack, which is likely used to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/406889139/coin-master-free-spin-and-coins-links-game-hack PDF link annotation
    • http://aspiesretreat.org/images/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/roblox-top_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/freerobux-co_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aspiesretreat.org/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://aspiesretreat.org/images/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a69.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A69 29152 bytes
SHA-256: 2d4c7360de57dffdf08d7097bfba70f817285951b3da61421a0241691e635133
font_01_sfnt_off00008b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B81 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00009807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9807 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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