Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e12789ce76ab9c4…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 18:38:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e2aaef0940f138a30b1433c7b8407455 SHA-1: 1799647f813509d02864cc8e90e37068619202a2 SHA-256: 5e12789ce76ab9c4d2c66dcc4a394bfcd1b3a2d00b9aa394bc0c88f5706747c9
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.co/app/431946152/sysnaspe-crack-free-2021-roblox-game-hack PDF link annotation
    • http://elibrary.perludem.org/repository/roblox-city-free-game_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-rs-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-cheats-for-android_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-kingsml-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/download-speed-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-games-stealing-free-models_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-comment-de-venir-un-hacker-lvl-2021-shinoby-life_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-accounts-and-passwords-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-have-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-piano-hack-mac_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spins-on-coin-master_GM406889139.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_off00002e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6C 21880 bytes
SHA-256: db9e01017fcf625913b7c8c2f086b64e2bd679cf31dc7132eece5fcb55bacf2c
font_01_sfnt_off00005e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E74 19580 bytes
SHA-256: 89a9e02f0c15f0ae5eb226064a7822939d0cff2bf3aaee272e3add55fe18e69d

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