Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f42aaf001ff331f…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 09:31:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a222df7d157571cc56efd7a743f0d1c1 SHA-1: 4a92abe6bab5f56c763aa06e8eed4a1d3c5cd9c4 SHA-256: 6f42aaf001ff331fc1b492b189c5374320bca80a4cf795976cf89fefc9ec4e77
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lure users with promises of free spins and game hacks, directing them to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple suspicious URLs reinforces this assessment. The document's content and structure suggest it is designed to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/406889139/100-free-spins-coin-master-game-hack PDF link annotation
    • http://perpustakaan.stikeshamzar.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/bloxy-site-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikeshamzar.ac.id/repository/best-site-for-free-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
stream_004_off00004d61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D61 24284 bytes
SHA-256: 64632ba3b5a7d7f5bdb94c1c4082e52d2ca5090a404794d73d6fb6495ab86743
font_01_sfnt_off0000851b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851B 18164 bytes
SHA-256: 9bc61af2acbda784231945e40c4a4bb5d6810b0d04641be6b37b2cdd3c5b78bc

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