Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca86e189b9a3a73c…

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 23:18:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd33ef367edacadc9cad659a99002214 SHA-1: 02cd1e71f8716f52ead9216014369564398ca2f8 SHA-256: ca86e189b9a3a73ca600873648bf0b5623cea1d874ab54326d783cd5dfd93191
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 users into interacting with the document, likely to download further malicious content. The embedded URL points to a domain associated with distributing such lures. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/games-that-give-you-free-robux-game-hack
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-download_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/my-robux_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/instagram-coin-master-free-spins_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/jailbreak-roblox-hack_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/roblox-games-free_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-cards-hack_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/mcpe-hacks_GM479516143.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-that-work_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • https://elearning.mtsn4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bf7.bin
f730105de0bbdfa01989ee20ddb445d60064be2a290e74607c690fa2c33391d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF7 24216 bytes
font_01_sfnt_off00008340.bin
c4d6735542cd49b50f18b2921f89e54fe5d8ee4af3f47c61005942af246faebd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8340 19168 bytes

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