Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cac3a7ee7c8573…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 00:29:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e1b88906258a826e77ddb6b761f39445 SHA-1: 8ae17ec96bc6e5f7817dc55d9e114ac1219b0474 SHA-256: 34cac3a7ee7c857340295560155367e0861ed14e49ab6432ac2b358531872500
122 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/431946152/roblox-free-online-game-game-hack PDF link annotation
    • http://library.futureuniversity.com/repository/free-roblox-accounts-and-passwords-in-roblox-shown-on-wikia_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-2021-july_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-a-free-gamepass-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/boku-no-roblox-codes-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-how-to-get-free-robux-without-hacks_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/worst-client_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE4 22352 bytes
SHA-256: 4e9075b9394c9801c1287d30f6935c76de141b0db18348ff2eac5a8b35f33725
font_01_sfnt_off000061d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D7 19032 bytes
SHA-256: f608c38b8bf3813bf99cca01271523f6aec15a536ab5f0d3bc4d22ce37f576e9

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