Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1706474495dfca…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 13:51:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0a270b16202624a64419fa4917b5002e SHA-1: 0b8920922289411ccb63386d5aa8c8a7dee23ca6 SHA-256: 4f1706474495dfca7861554e54fe1b939707a088c53584cc017285924e09d734
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and generators, a common lure for malicious content. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior. The document body, though partially corrupted, contains references to these lures and the wkhtmltopdf authoring application, suggesting it was programmatically generated to host these links. No scripts were extracted, but the primary attack pattern involves social engineering through deceptive links.

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.co/app/431946152/roblox-cheat-engine-does-not-work-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/roblox-cbro-how-to-get-free-knife_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-games-that-will-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/javascript-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/blackout-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-hackear-la-cuenta-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/s303-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/tiktok-for-free-online_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-coin-link_GM406889139.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_off00002cd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD8 22540 bytes
SHA-256: c62029577138f7b4ca8cc55c8cb5a12840035797b4e6f0aac6f4ddea0ca48ae8
font_01_sfnt_off00005f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3F 19412 bytes
SHA-256: 653ef28cfd17a80a3b2318913e43ad66fbf109a7ae74e06fe96205cbe686b994

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