Malicious PDF — malware analysis report

Static analysis result for SHA-256 d210be1d8915c02a…

MALICIOUS

PDF

49.5 KB Created: 2021-06-10 20:15:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 19e1b9c2dff154d1aa5408f0a58f4210 SHA-1: 0add633a73922e410a8902a3fc9221d8de080d35 SHA-256: d210be1d8915c02a77c552e271d688ccce735b66db883c6afe6ef5ed4020757e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that attempts to lure users into downloading game-related hacks or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it is designed to redirect users to malicious sites. While no scripts were explicitly extracted, the document's structure and content indicate it serves as a lure for malicious downloads, likely involving JavaScript execution within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-items-roblox-2021-game-hack
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hack-apk-no-fb-login_GM406889139.pdf
    • http://apartmani-mestrovic-krk.hr/files/jailbreak-roblox-hack_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/free-robux-script_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/minecraft-coins-free_GM479516143.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/blogspot-coin-master-free-spins_GM406889139.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-coins-link_GM406889139.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-no-verify_GM431946152.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • http://apartmani-mestrovic-krk.hr/files/cheat-in-parkour-roblox_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/roblox-jailbreak-hack_GM431946152.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/free-script-executor-roblox_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/minecraft-client_GM479516143.pdf
    • http://apartmani-mestrovic-krk.hr/files/hack-para-coin-master-sin-verification_GM406889139.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-hacker-us_GM431946152.pdf
    • http://apartmani-mestrovic-krk.hr/files/robux-com-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000540d.bin
8796a3a8d1f5e30d03688b905b00b4a78ba5e66bd595330772b98527df36742d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x540D 25848 bytes
font_01_sfnt_off00009052.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
pdf-font-stream PDF embedded font (sfnt) at offset 0x9052 5696 bytes
font_02_sfnt_off00009d64.bin
9c9a666d2201827e0b94d01676e8882a9f2e4b1c102903fa6a16a12e740ac371
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D64 18716 bytes