Malicious PDF — malware analysis report

Static analysis result for SHA-256 54a8c6f8b7bc7829…

MALICIOUS

PDF

45.4 KB Created: 2021-06-14 01:38:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b494d019dd864f188c4ba4533d42b585 SHA-1: 7098b068434f9f3766dd533b6d9cc5b00b520697 SHA-256: 54a8c6f8b7bc7829f09aada10dbfc5f73b018da623e198eb41d4ee641edb69d0
102 Risk Score

Malware Insights

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

The document contains a lure related to free in-game items for Roblox, which is a common tactic for phishing or malware distribution. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may attempt to trick users into revealing sensitive information. The embedded URL and numerous other URLs point to potentially malicious sites offering game hacks or cheats, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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 http://netcdn.co/app/431946152/how-to-get-free-penguin-in-roblox-game-hack
    • https://nexsoftech.com/upload/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://nexsoftech.com/upload/userfiles/files/coin-master-game-hack_GM406889139.pdf
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hack-without-verification_GM406889139.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-pe-free-download_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/free-robux-without-doing-anything_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/tiktok-follower-bot-free_GM835599320.pdf
    • https://nexsoftech.com/upload/userfiles/files/free-shirt-roblox_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/free-robux-hack-2021-working-subtitles_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/can-i-get-minecraft-for-free_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-hack-mod_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/free-robux-no-verification-required_GM431946152.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-java-edition-free_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdf
    • https://nexsoftech.com/upload/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdf
    • https://nexsoftech.com/upload/userfiles/files/coin-master-apk-hack-mod-download_GM406889139.pdf
    • https://nexsoftech.com/upload/userfiles/files/coin-master-hacks-no-surveys_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a12.bin
5abd900fb906f21b827871a0effd529ee89410c82f35a59868c2af85f4b295ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A12 26920 bytes
font_01_sfnt_off000082e8.bin
0f10adbf105d053971010bc1f17c4dd55814d599674c84f75a6eb4cb46a9c89b
pdf-font-stream PDF embedded font (sfnt) at offset 0x82E8 2896 bytes
font_02_sfnt_off00008cde.bin
50079de486aac119b31a814611e804c46338dec6f2c60d3d15286a22ddb36b02
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDE 18916 bytes