Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef87b5816f47fee2…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 04:57:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a94e7680d49278156ec48ce74415a8a9 SHA-1: 5fbb541d1e3d5f888db39d2b4ed864be6ef3b772 SHA-256: ef87b5816f47fee204e0a11d21d2740f2d35b883611b787d3b8c27713311ace5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites offering in-game currency or hacks for popular games. The ML classifier also flagged this PDF as malicious. The presence of these links and the nature of the lures suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/431946152/free-roblox-cards-pin-number-game-hack
    • http://library.itekes-bali.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/hack-a-game_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-app_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-snacks-in-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-rewards-app_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-2021_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-get-minecraft-java-for-free_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-robux-page_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/minecraft-book-collection_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/can-you-hack-coin-master_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/hack-coin-master-game-download_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-to-get-free-spins_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ca.bin
61fded04ce2a1785c9a13c135e881e8f6b2ee47819f2834df5ffdbfc38875dc1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CA 24452 bytes
font_01_sfnt_off00008a15.bin
fa76cc2dab30b56d5305de71ce949b6adffd6580af2f26905a33966a3200adbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A15 2912 bytes
font_02_sfnt_off00009411.bin
d202742233b17ada8e60ef392bbe1d59108b00a04bd9cee781b4229daa03d739		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9411 19024 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.