Malicious PDF — malware analysis report

Static analysis result for SHA-256 efad6f01e5834ffc…

MALICIOUS

PDF

45.5 KB Created: 2021-06-04 03:12:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fe6705809af9d2b1f8dc10d4f25d5ae6 SHA-1: 1ab6b1c0c3f0593920435f84c7f398491f10409c SHA-256: efad6f01e5834ffc6989e6c9ca1936a8fa3928c4c047071536984571383de0dd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link disguised as a 'free Robux generator' or 'game hack', a common lure for phishing or malware distribution. The embedded URL points to a suspicious domain associated with such lures. While no scripts were directly extracted, the PDF structure and heuristics indicate an attempt to redirect the user to a malicious site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/free-robux-without-human-verification-2021-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://www.roblox.coIn 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
stream_004_off00004fab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FAB 26408 bytes
SHA-256: 1ae3101e99e4c2fd12c5b52c8b1bd734e5051b49da0839b488814a7d90e86b03
font_01_sfnt_off00008b1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1F 19624 bytes
SHA-256: 5c907f8fc0171ac382cbe47737dfe307495a07ea2f2097b2a41ed37680731fb3

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