Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fefda2380d78cd…

MALICIOUS

PDF

41.0 KB Created: 2021-06-08 17:54:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0ae6aadb259139d62fc671d73a2420a1 SHA-1: 6a31721f3c013d734e51f52f76c23799a92832a5 SHA-256: e0fefda2380d78cd1f9b4f2d0607563df3cdb8ad2334dc48ff04663429fb1fa3
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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
  • 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 https://netcdn.tw/app/431946152/hacks-for-tower-battles-roblox-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/114-hacks_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-roblox-admin-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/pubg-uc-or-g_GM1330123889.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005110.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5110 25448 bytes
SHA-256: e65b1c4672f36d837b5f18988403ce350e070ffc8eb8592b1e46b7e60423ccff

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