Malicious PDF — malware analysis report

Static analysis result for SHA-256 df283b5ce37f813f…

MALICIOUS

PDF

44.2 KB Created: 2021-06-11 07:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 796839b1ef5e6baa9d2ee55868645ddd SHA-1: 5a7323fea905a3e89fee07836469c895e366af15 SHA-256: df283b5ce37f813f3e367d1f648f44e2f737ac668f5887fb78433d3a2f903b02
82 Risk Score

Malware Insights

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

The document presents itself as a lure for game hacks, specifically mentioning 'Roblox Hacks For Apocalypse Rising'. It employs a fake CAPTCHA or human verification prompt to trick users into interacting with the document, likely leading to a download. The embedded URL `https://netcdn.tw/app/431946152/roblox-hacks-for-apocalypse-rising-game-hack` is a primary indicator of the malicious payload's origin. No scripts were extracted, but the PDF structure and heuristics suggest an attempt to exploit user interaction for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-hacks-for-apocalypse-rising-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/roblox-earn_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-roblox-cards-links_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D99 25816 bytes
SHA-256: 8d3a4a5619c539dc611e37af18f17c7f2a3724bdfa33e703a19d10e8d561045c
font_01_sfnt_off0000878e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878E 19108 bytes
SHA-256: 230159ea38530a30bb10f44ef377e8f16255678c17ab52b0b50a49676f2bdcf9

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