Malicious PDF — malware analysis report

Static analysis result for SHA-256 212862ba4b8b7ffb…

MALICIOUS

PDF

48.4 KB Created: 2021-06-04 00:10:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a8d767b49d781b28c9c8595f37f98201 SHA-1: 0da7a2dea7d9a24d95aa69e496c993cbd0349e99 SHA-256: 212862ba4b8b7ffbc499a36172795bfa759aad586f9c5bfa74f87bf54a6d737e
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 0.9796

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/431946152/robux-hack-generator-game-hack PDF link annotation
    • http://lib.mbp.ac.id/repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/www-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/where-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-800-robux-for-free_GM431946152.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_off0000510c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x510C 25720 bytes
SHA-256: 15560287c1d172da95c0f1da802849a053c071416e6a7c75cb7da130b4f5e803
font_01_sfnt_off00008cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD6 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000099e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E8 18352 bytes
SHA-256: f5433ce3dc9930d213a8e7315569ee207b9df6dd56817c97a1fb358bc14a6a3b

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