Malicious PDF — malware analysis report

Static analysis result for SHA-256 33479438a5b9994f…

MALICIOUS

PDF

35.6 KB Created: 2021-06-28 22:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f674ac5fd1bac9e4b48ba769264a8765 SHA-1: 30793aaf5bf84c4bbef9c8b7df05fe22e23b6611 SHA-256: 33479438a5b9994fe1cc0428bb9e01fab58e9e6aaeb9caf5a5eb24d47c4db5c6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, identified as a link farm, that lead to sites offering game-related cheats and hacks. The document body explicitly mentions "Free Robux Glitch 2021" and "free-robux-glitch-2021-game-hack", indicating a lure for potentially malicious downloads or scams. The presence of external URIs and the ML classifier's high confidence score support a malicious verdict.

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-glitch-2021-game-hack
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-coin-and-spin-app_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hacks-2021-free-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/dont-take-damage-hack-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/hack-mad-paintball-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/hack-coin-master-online-without-human-verification_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-how-to-get-alone-cheat_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-codes_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-with-no-human-verification_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-generator-no-human-verification-and-no-survey_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-stuuf-in-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/tiktok-free-tv-shows_GM835599320.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-sea-star-for-free-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/pokemon-go-free-accounts-2021_GM1094591345.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-free-login_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003243.bin
fbd23e41099efd46efc9dd9540c33350d161835e44af6ade7bf86c2a0957aab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3243 22520 bytes
font_01_sfnt_off00006476.bin
49ba4baf702fc5c58a1f029aa7a71d52698b25bddccb56a1fea57918bb04c541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6476 19580 bytes

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