Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e9b22f19f46c8cb…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 04:39:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3ebcabffc71c4b63c45778aa77bec601 SHA-1: 17aa56da9a2c789402c1413e34756be8ca175894 SHA-256: 8e9b22f19f46c8cbda614bad9cb908df2b0ac2760186382a617c826850dc6785
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9969

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.xyz/app/406889139/coin-master-free-cards-link-2021-today-game-hack PDF link annotation
    • http://elibrary.uinbanten.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.uinbanten.ac.id/repository/huskybuckscom-free-robux_GM431946152.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_003_off000048a8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A8 27108 bytes
SHA-256: c0597cd9f52e39b710bd04ac8c9ab0de3a8114b86f66cedfb589b40073cbbe10
font_01_sfnt_off000086ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86AC 18636 bytes
SHA-256: d718e2cb50f6f6a34b32f5d5c2dca0cb672e7940673eb9b7e66d247dab8a0a4b

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