Malicious PDF — malware analysis report

Static analysis result for SHA-256 66377342e0b3a68e…

MALICIOUS

PDF

35.0 KB Created: 2021-07-01 23:35:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2152fc86cf80a47578ee68670116fbc8 SHA-1: 0607b66af3faab091c3a4085248ba753d7ce798b SHA-256: 66377342e0b3a68e181941663097ba687d8b1a1c517938631da358ac77d2ad26
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links and a call-to-action phrase, strongly suggesting a lure to download malicious content. The ML classifier and PDF link farm heuristics further indicate malicious intent. The document's content and structure are consistent with a phishing or malware distribution scheme, likely involving the exploitation of user interest in game-related cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/hack-para-volar-en-roblox-game-hack
    • http://lib.fekon.untad.ac.id/repository/change-roblox-username-pastebin-free_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/hack-robar-cuenta-de-roblox_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-free-download-xbox-one_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/spins-for-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/free-hacks-for-coin-master_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/cheats-for-roblox-on-phone_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdf
    • http://lib.fekon.untad.ac.id/repository/best-roblox-hacks-2021-hand_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-free-codes-jailbreak-for-money_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/roblox-robbery-simulator-hack_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/whats-a-code-for-roblox-to-get-free-robux_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-websites-2021_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-online-games-like-minecraft_GM479516143.pdf
    • http://lib.fekon.untad.ac.id/repository/free-roblox-shirt-maker_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-call-roblox-on-pc-for-free_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-scam-no-survey_GM431946152.pdf
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-advertisement_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ac.bin
9f717023b22becd4710e05c55052c782fb3017ea6ef32c30188fb609fd97a708		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31AC 22476 bytes
font_01_sfnt_off000063ed.bin
ae5536edbed5d443e50e4d738772f94f8971d506b662ec1f4581434fc0317faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 18944 bytes

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