Malicious PDF — malware analysis report

Static analysis result for SHA-256 e03a0df6b17e8dcc…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 22:11:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 26e19911c61e1dcf5272d478e4815bfa SHA-1: 73be40f7dffcf0631f019e1d581c559cd9e9207b SHA-256: e03a0df6b17e8dcc49c1156555cf93e29c29ad12cba259bfc5c81ef4f02bbbe0
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-hack-tool-without-verification-game-hack PDF link annotation
    • http://perpus.stfm.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-robux-2021_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_004_off00004ec4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EC4 25912 bytes
SHA-256: a37c42d82611d4c83562c2f6d7bd34880889df858040e889b31b2f013404839f
font_01_sfnt_off0000887d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887D 18428 bytes
SHA-256: 0d4d1d3c8b3a8d9a8bf2514a91debdfd463a95143a55049788bc4d3b9a66685d

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