Malicious PDF — malware analysis report

Static analysis result for SHA-256 e805a1783549c7a3…

MALICIOUS

PDF

36.4 KB Created: 2021-06-26 00:10:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 666644869598ebdca2b55d298e90d499 SHA-1: e5d756cecc819f6005143bc36b18997d977bb006 SHA-256: e805a1783549c7a3ab8b2565d5f55b7e563069815faf01341e0f98a31bcb19ac
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are SEO-optimized and appear to be lures for free in-game items or accounts. The ML classifier strongly indicated maliciousness, and the presence of a download button heuristic further supports a malicious intent. The document likely serves as a phishing or malware distribution vector by directing users to potentially harmful sites.

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/free-unused-roblox-card-codes-2021-game-hack
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-vip-server-for-roblox-labyrinth_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-roblox-accounts-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-no-inspect-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/hack-tiktok-fans-free_GM835599320.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-bee-swarm-simulator-script-gui-free-bees_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/cb-roblox-hacks_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-dominus-promo-code-2021_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-no-hack-no-inspect_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/get-free-robux-no-inspect-fake_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-roblox-promotion_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-xbox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-a-roblox-hack_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-do-you-get-free-roblox-skins_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-list-of-roblox-accounts_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/best-working-level-7-exploits-free-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-into-builder-mans-account-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/click-teleport-hack-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034fc.bin
2ccfea1263444bac3a4dc5c8de75ebbde3be212b130fb741f4069c28bc869501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x34FC 22932 bytes
font_01_sfnt_off00006848.bin
c8ead2f24ea4a0466f700dbf6317eb922f0a95c6aec922b55d69f94d611923d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 19364 bytes

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