Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c1b920caf3b854…

MALICIOUS

PDF

41.4 KB Created: 2021-05-18 01:32:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3e9a344472f756c24466d485197633cd SHA-1: 55af19ba2514c919cc2fb696d6e065910b130a32 SHA-256: a8c1b920caf3b8544908ca10585b9b7154f2b608d34ff0c8fbfe5919425022cb
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 0.9971

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-coins-and-spins-game-hack PDF link annotation
    • http://www.metinadistribuzione.com/images/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://www.metinadistribuzione.com/images/coin-master-hack-using-lucky-patcher_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_off00004803.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4803 24712 bytes
SHA-256: 44eaccec1f914c829e85aacba8ed1cdd3582f37a0ed1a0a8f8c507b28c490fd5
font_01_sfnt_off00008018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8018 18060 bytes
SHA-256: f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb

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