Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cf9387428422f8…

MALICIOUS

PDF

47.5 KB Created: 2021-06-10 20:54:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ab2de8de2c7c0dfded1a473a049fbba3 SHA-1: ed8ae2bdd19d632f02628a93b197135c58b492f7 SHA-256: d8cf9387428422f8824276387265612798dbde610179f58f8430c7447ecb3b72
122 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is malicious and uses social engineering tactics. It presents a fake download button and password instructions, commonly used to trick users into installing unwanted software or revealing credentials. The embedded URLs point to external resources that likely host the malicious payload or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 5

  • 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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/how-to-open-cheat-engine-without-roblox-shutting-down-game-hack
    • http://szekelymozes.ro/images/hack-coin-master-2021-pc_GM406889139.pdf
    • http://szekelymozes.ro/images/minecraft-free-apk-download-016-0_GM479516143.pdf
    • http://szekelymozes.ro/images/da-hood-cheats-roblox_GM431946152.pdf
    • http://szekelymozes.ro/images/pokemon-go-free-spoofer_GM1094591345.pdf
    • http://szekelymozes.ro/images/how-to-get-free-robux-app_GM431946152.pdf
    • http://szekelymozes.ro/images/how-to-hack-a-minecraft-server_GM479516143.pdf
    • http://szekelymozes.ro/images/minecraft-free-ios_GM479516143.pdf
    • http://szekelymozes.ro/images/minecraft-windows-10-edition-free_GM479516143.pdf
    • http://szekelymozes.ro/images/get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://szekelymozes.ro/images/pokemon-go-free-and-defit_GM1094591345.pdf
    • http://szekelymozes.ro/images/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/get-free-robux-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/daily-coin-master-free-spins_GM406889139.pdf
    • http://szekelymozes.ro/images/master-coin-free-spin_GM406889139.pdf
    • http://szekelymozes.ro/images/roblox-robux-generator-hack-2021_GM431946152.pdf
    • http://szekelymozes.ro/images/how-do-i-get-free-robux-now_GM431946152.pdf
    • http://szekelymozes.ro/images/games-to-get-free-robux_GM431946152.pdf
    • http://szekelymozes.ro/images/coin-master-free-spin-and-coins-links_GM406889139.pdf
    • http://szekelymozes.ro/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdf
    • http://szekelymozes.ro/images/how-to-get-20210-robux-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005247.bin
968a88c61be06e51dd96c34103752c2c8f01b3481ffd4f81a0cf72e9854f6488		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5247 28352 bytes
font_01_sfnt_off0000933b.bin
ced0a9d891014bb7145669243fd6996f46ee7485499fbf8564de31d33a53c318		 pdf-font-stream PDF embedded font (sfnt) at offset 0x933B 19536 bytes

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