Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ea1439460bb153…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 00:09:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dfd959dec4583d33d690ab2735a886d8 SHA-1: 54beefbf326270d79802dd18c0f917b569573a4d SHA-256: e6ea1439460bb15361a47c08aeaad909dd92f967dcd6a2941773dea32564dffd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent call-to-action related to game cheats and hacks, indicating a phishing or social engineering attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests it's designed to lead the user to a malicious download. The heuristic for a password-protected archive lure further supports the malicious intent, likely to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/hack-to-send-gold-cards-on-coin-master-game-hack
    • http://library.atim.ac.id/repository/roblox-hacked-com-2021_GM431946152.pdf
    • http://library.atim.ac.id/repository/comment-etre-un-hacker-sur-roblox-francais_GM431946152.pdf
    • http://library.atim.ac.id/repository/roblox-working-free-robux-games_GM431946152.pdf
    • http://library.atim.ac.id/repository/cheat-jailbreak-rush-hacked-roblox_GM431946152.pdf
    • http://library.atim.ac.id/repository/money-hack-for-roblox-jailbreak_GM431946152.pdf
    • http://library.atim.ac.id/repository/how-to-get-robux-for-free-without-hacking_GM431946152.pdf
    • http://library.atim.ac.id/repository/when-do-hackers-hack-roblox_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-jailbreak-account-roblox_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdf
    • http://library.atim.ac.id/repository/roblox-cheats-for-robux-and-tix-2021_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-roblox-promo_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-minecraft-com_GM479516143.pdf
    • http://library.atim.ac.id/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdf
    • http://library.atim.ac.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://library.atim.ac.id/repository/roblox-wanted-money-hack_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-robux-safe-download_GM431946152.pdf
    • http://library.atim.ac.id/repository/free-robux-no-gift-card_GM431946152.pdf
    • http://library.atim.ac.id/repository/robux-sign_GM431946152.pdf
    • http://library.atim.ac.id/repository/hack-roblox-account-password-2021_GM431946152.pdf
    • http://library.atim.ac.id/repository/cbro-roblox-hacks-june-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ff8.bin
4206621d9fd4dc6144b332a04ea240ff57224022102c089e5a8b534045aedd67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF8 22384 bytes
font_01_sfnt_off000061cc.bin
2404e29e1a45577db7d9d1851bba941e7ce9a3146c2b043007f3b8db4c3efe9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 18252 bytes

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