Malicious PDF — malware analysis report

Static analysis result for SHA-256 0689bada5f47b47f…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 03:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b0b34f4cd7f45c90d54a04f8b1d3e176 SHA-1: 9a084811788804a6d7cbde011b760f126e9c050d SHA-256: 0689bada5f47b47f6bbb17e92fa5e930d131e77564e1559d7ec3979f9f93e897
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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-spin-hack-game-hack PDF link annotation
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-2021-promo-code_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-dominus-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/114-hacks_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/exploit-engine-roblox-free-no-virus_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-golden-suit-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-500-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hack-no-problem-with-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-accounts-november-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/www-free-robux-club_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacker-takes-over-roblox-streamers_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/webs-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-no-human-veriy_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-bss_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_002_off00002fea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FEA 22816 bytes
SHA-256: cc45ba755557b262e0f243e5dd13249a53e4de06ca45839a9ed4f6c7091a2ce7
font_01_sfnt_off0000630e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 18180 bytes
SHA-256: a132cedd825d849e0d721dfbb1ea0ac908be68f445a4640ebf6ea6c953a82746

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