Malicious PDF — malware analysis report

Static analysis result for SHA-256 7248b281f972d310…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 05:56:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d5321616da75046a5bb0e71c1511da81 SHA-1: ab0374f8a49bbb7d27fb0d0713b4e3c57e8a5764 SHA-256: 7248b281f972d310170fb1e87b530825c20bf61cb1e6da63f9e2be0994a452d6
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 0.9865

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/coin-master-free-spins-and-coins-game-hack PDF link annotation
    • http://lib.mbp.ac.id/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coin-master-hacks-no-verification-or-survey_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_off00005056.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5056 25112 bytes
SHA-256: 8402f69cd18fc822f555c50044d61de6db4f4f0d7c66d62351ead600c9bbd581
font_01_sfnt_off00008a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7C 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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