Malicious PDF — malware analysis report

Static analysis result for SHA-256 09894692259f627a…

MALICIOUS

PDF

46.8 KB Created: 2021-06-04 02:16:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 57ae7a3d62b490b4c4b2ea6d39612c22 SHA-1: 2f9e4cbbb8abb0e53d978c7ef08c2240ac1fccd4 SHA-256: 09894692259f627aed7a181d5f7010010adc8c01d85f45c976a081a7fd136586
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that are identified as lures for game hacks and free currency, indicating a social engineering attempt to redirect users to potentially malicious sites. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URIs and the nature of the lures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/daily-free-spin-coin-master-link-game-hack PDF link annotation
    • http://pustaka1.unindra.id/repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://pustaka1.unindra.id/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000511f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511F 24776 bytes
SHA-256: 21203174a49e43e65a3428e6d77c88c4eaae7c77791952f1c1e2f6259f2c43ea
font_01_sfnt_off00008957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8957 2924 bytes
SHA-256: 6e09a5d1c64d460ceb4e2be3d9e2b7c287b85a769777e178a0390ea781e7043c
font_02_sfnt_off0000936c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936C 18476 bytes
SHA-256: 13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176

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