Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bbbb39301336913…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 09:01:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ccc08ac8f44fca46a19f76a1fa712eec SHA-1: a0dc4a3c5f22e1bfdc6d1ea6136191ac3c1bcdac SHA-256: 3bbbb3930133691337b97cb7010cf8fdb90b4d21bd34d1a0b653ed03f6b99caf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 4

  • 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.
  • 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/479516143/minecraft-hack-client-download-game-hack PDF link annotation
    • http://librarysenior.com//repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-roblox-birthday-party-invitations_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://librarysenior.com//repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/how-to-get-400-robux-free_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://librarysenior.com/repository/how-to-hack-any-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-sailor-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://librarysenior.com//repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://librarysenior.com//repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://librarysenior.com/repository/rxgate-cf-free-robux-redeem_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000301a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301A 21692 bytes
SHA-256: 305dc4dfb221f74d10d40071357ae33114dd5e6c29bb3312f06855cd830ac288
font_01_sfnt_off00005f65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F65 18748 bytes
SHA-256: c45ee2d1dd43e8513d66b509938ceb122ec1fdfa533c8cde096dea51f38d5c86

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