Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bbd246ceec2cb8f…

MALICIOUS

PDF

42.5 KB Created: 2021-04-28 22:40:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0de060c67bf4ce1f55c01b72879dc69c SHA-1: 185446ec3cc3018bee1bafd88bac7d34ba8da419 SHA-256: 2bbd246ceec2cb8f73c5f2eda858e000b26c98fcfaa480e2153f46e4f8c21e4b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and embedded URLs that lead to files promising free hacks for the game Roblox. The ML classifier and PDF link heuristics strongly indicate malicious intent, likely to trick users into downloading malware disguised as game cheats. No scripts were extracted, but the document's structure and embedded links point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.xyz/app/431946152/aimbot-free-download-roblox-game-hack
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/free-roblox-hack-no-human-verify-for-tablets.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes-2021.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/royale-high-roblox-cheats.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/roblox-groups-with-free-clothes.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/free-jailbreak-money-roblox.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/how-to-get-free-robux-on-computer-easy.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/how-to-hack-roblox-with-inspect-element-no-blogspot.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/cheat-lumber-tycoon-2-roblox.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/como-ser-hacker-en-roblox-jailbreak-2021.pdf
    • https://alfombrillasyprotectoresmaletero.com/ckfinder/userfiles/files/buy-free-robux-roblox.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000420f.bin
5044d1d864c7186d133228aefc00204b91fd7a04e259a919cc27843f969499f6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x420F 28228 bytes
font_01_sfnt_off000081d2.bin
fca370d7ff8f85ff8ee1a58fe9aa53eb9c3b53aa6c44a9480d96d2ee29314981		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 19168 bytes

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