Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5cc69af37984ca…

MALICIOUS

PDF

36.3 KB Created: 2021-07-01 20:38:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2a7d9a7da1a0aa70ec41fdcd094717d2 SHA-1: d9d331f0647cd2562609828a919ad16780bade58 SHA-256: 7c5cc69af37984cadc6d68dbc92dd56bed27043ae17dbed897a94ba0a80cd6f0
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document exhibits characteristics of a malicious lure, specifically promoting free Robux and game hacks. It contains a large number of external links, many of which point to other PDFs with similar deceptive titles, suggesting a link farm designed to attract users searching for cheats. The document also includes a call-to-action and instructions for providing a password for an archive, a common tactic to bypass security filters for malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-admin-codes-2021-game-hack
    • https://www.e-library.smpn09.semarangkota.go.id/repository/chrome-web-store-roblox-hack-jailbreak_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/mask-black-panther-free-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-int-a-friends-roblox-account_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-robux-hack-generator-no-verification_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/www-roblox-com-robux-free_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-use-cheat-engine-64-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/minecraft-pe-free_GM479516143.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/tampermonkey-robux-hack-that-works_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/cash-for-apps-free-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-fun-com-free-robux_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/lavar-hack-com-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-roblox-money-2021_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-dorm-life-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/cheat-roblox-dongeon-quest-installer_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/how-to-hack-minigame-testing-place-on-roblox_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/roblox-password-hacker_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/can-people-actually-hack-into-a-roblox-account_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-to-use-roblox-shirt-new_GM431946152.pdf
    • https://www.e-library.smpn09.semarangkota.go.id/repository/free-roblox-robux-codes-no-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033fc.bin
5ee29969bd72500484d33aa438d955f29867a7ea84bc0c68110bc52a30451d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33FC 22808 bytes
font_01_sfnt_off000066e5.bin
ac2f41141f1b927ed3e68c03e6fdc77299adc42385d1a231b5b7caf683de645e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E5 19672 bytes

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