Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b57eea0b1fff786…

MALICIOUS

PDF

34.9 KB Created: 2021-07-02 04:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bfc403c455ad2e79baf07a8cdf85dd11 SHA-1: 570b510ed49529934e7270064d0b756b1aaaed8b SHA-256: 7b57eea0b1fff786515d2eff00f7433d4f5904b292d2002e0a807292e9c3ac76
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 point to external resources related to game hacks and free in-game currency. The primary URL, http://netcdn.co/app/431946152/can-your-roblox-account-get-hacked-by-cookies-game-hack, suggests a lure for users seeking exploits. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted, but the structure and embedded links strongly indicate a phishing or malware distribution attempt.

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/can-your-roblox-account-get-hacked-by-cookies-game-hack
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-how-to-get-everything-free-in-the-catalog_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-change-roblox-name-for-free_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-spins-coin-master-links-blogger_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-speed-hack-cheat-engine-vermillion_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-free-spins-2021-hack_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/get-free-followers-on-tiktok_GM835599320.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-robux-apex-spice_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-master_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/pubg-uc-image_GM1330123889.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/wahoo-gaming-co-roblox-free-robux_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-cheat-codes_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/minecraft-education-edition-free_GM479516143.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/minecraft-account-hacked_GM479516143.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-roblox-giveaway-accounts_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-park-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030c8.bin
d4d8ac17f62cf664ecb38787012fd32bdc36af03aeecb4f2e942a32f7ba7979c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30C8 22116 bytes
font_01_sfnt_off000061bc.bin
1f5d80fbc3f05409129bdec35de1abed6c6ee8127363f9d618e277451df7eb3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 19536 bytes

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