Malicious PDF — malware analysis report

Static analysis result for SHA-256 704266cb8cf2b7b3…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 07:14:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a0e2ede5ab17b02c10cec341a56c9b41 SHA-1: 9a3cf96ac11f636d0e4e5900ea4380e5ca435cfb SHA-256: 704266cb8cf2b7b394a71b4e5a503ff9820d9a62e607e3a6ce5fa48ba795e4f6
142 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are disguised as game hacks or cheats. The presence of a 'password-protected archive' lure suggests that the linked content may be intentionally obfuscated to evade security checks. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/cheat-bad-business-roblox-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/who-to-get-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-cheat-engine-hack_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-on-coin-master-game_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-roblox-games-mac_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/is-minecraft-free-on-mac_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/hack-dragon-ball-rage-roblox-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-royale-high-diamond-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/hack-coin-master-app_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-ant_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-jailbreak-hack-application-easy_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/mcpe-download_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/cheat-roblox-2021-btools_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-heaven-free-spins-link_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-do-you-get-free-robux-on-robloxcom_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-get-free-roebucks_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/jailbreak-roblox-hack_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/tiktok-for-free_GM835599320.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000313a.bin
6ece9ef70a60e33a10d4c54ec6bcabefa1fb005dde34c0742b63daf70d5b70c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x313A 22732 bytes
font_01_sfnt_off00006455.bin
6f8d788a47931b0dd1ab1557472164198e56944895e9cd8ac64826c4586df760		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 19192 bytes

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