Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e663b7d98ac1eac…

MALICIOUS

PDF

34.2 KB Created: 2021-06-23 05:32:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4710988a20104cc2202dda31c73e53b5 SHA-1: 21077dd89c1020553972521d0b9cbe4f30ca6366 SHA-256: 8e663b7d98ac1eac63d77341206a4602f07ca05a066240bbb5b533a712cfbc7a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains numerous embedded URLs and a "call-to-action" phrase, strongly suggesting a phishing or malware distribution attempt. The document body and extracted URLs focus on "free Robux" and game hacks, a common lure for tricking users into downloading malicious files or visiting compromised sites. The ML classifier also flagged this PDF as malicious with high confidence.

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-robux-copy-paste-game-hack
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-no-download_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-hack-roblox-accounts-pc_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-roblox-legally_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-robux-generator-no-verification_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/constructeur-roblox-free_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/robux-hack-no-human-verification-pc_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-free-play-without-download_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/robux-code-2021-free-game_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-secret-cheat-codes-music_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/how-to-use-penis-hack-on-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-ro-piece-hacks_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-how-to-free-robux-for-free-with-out-hacking_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/ho-to-get-free-robux-in-roblox_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/free-roblox-inventory-code_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-someone-thinks-im-hacking_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/get-free-robux-gift-card-codes_GM431946152.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/free-robux-codes-2021-september_GM431946152.pdf
    • http://simpus.umb.ac.id/pustakaumb/slim7/repository/roblox-apocalypse-rising-cheat-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f6f.bin
4387954f919310ca9a3dba7e22a541e9f184467335bf1572a53f7941fbddd94c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6F 21944 bytes
font_01_sfnt_off00005fb1.bin
139fff58fa31583d7f89dac66cc826c76f973a5c2327f4ef644301b6f07455f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 19332 bytes

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