Malicious PDF — malware analysis report

Static analysis result for SHA-256 29d0ab36b2c8e76f…

MALICIOUS

PDF

44.1 KB Created: 2021-05-11 07:34:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 960232b71a0989aed30a652a6b5e458d SHA-1: 4c6ba4009ade40d8d9b27252a4f6e20aaeaeeb87 SHA-256: 29d0ab36b2c8e76fa3abe96639f200ff3f3e83ced143a27d609d7bdb7aaa5a8d
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 0.9976

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-spins-and-coins-blogspot-game-hack PDF link annotation
    • http://www.maakherumusic.net/images/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://www.maakherumusic.net/images/robux-game-com_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-spins-coin-master-2021-no-verification_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_003_off00004acc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACC 27248 bytes
SHA-256: 87d57a2c4c9a0808ef8a1fe3f71d0056151132f8a97a5b984e0fb4131aa0e69f
font_01_sfnt_off0000890a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890A 18636 bytes
SHA-256: 0f54115b9972647639797d248389657ce322f7c5c12f639c73d71ff235a73201

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