Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3abe56f50b5a857…

MALICIOUS

PDF

37.0 KB Created: 2021-06-18 16:34:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2318a58eebd76dd56b7bc7637fe65bd8 SHA-1: b7d439c23307b7d84b97568c714bb97bfe617312 SHA-256: c3abe56f50b5a857ac629e7a1fdca7e051d70fcfbb05500b771334bd2721e779
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external resources, many of which are hosted on domains associated with SEO link farms and potentially malicious content. The document body explicitly mentions 'Robux Hack No Download Or Survey', indicating a lure for users seeking in-game currency or cheats. The presence of embedded URLs and the ML classifier's high confidence score suggest this PDF is designed to redirect users to malicious sites, likely for malware distribution or phishing.

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/robux-hack-no-download-or-survey-game-hack
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-roblox-game-to-play_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-with-fake-credit-card_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/online-robux-hack-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-gamepass-script-roblox-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-bandit-mask-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-unlimited-robux-generator-no-human-verification_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-for-free-online-no-download_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/can-my-childs-friend-hack-roblox-game_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-tower-defense-hacks_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/tuto-hacker-sur-prison-life-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/minecraft-fly-hack_GM479516143.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/jai-eu-2021000-free-robux-no-fake-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-cheat-new-com_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-robux-promo-codes-for-roblox-not-expired_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-on-roblox-phone_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-free-pants-and-shirt_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/jaibreak-hack-roblox-script-auto-aresst_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-kck-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003543.bin
fc495269b30f9a2040f75ca3506a6d65f3341ef3b385952232823448a507050a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3543 23280 bytes
font_01_sfnt_off000069c6.bin
ef286ae90d1f30a311722e8eb983ab950c976558f40ad600547287312b7df13d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C6 19596 bytes

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