Malicious PDF — malware analysis report

Static analysis result for SHA-256 5850c06ead7c9f27…

MALICIOUS

PDF

32.6 KB Created: 2021-07-05 16:24:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: da6742564c3f79d6f6a281c3328f4a43 SHA-1: 028fa60cb6330fccfd7aeb07abf2185521022d8f SHA-256: 5850c06ead7c9f279d3ae3758b69b53c22e48eb2a5f5f7d7c3e942cabb7f0cc7
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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.
  • 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/479516143/minecraft-free-download-iphone-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/skyline-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-accounts-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/a-free-robux-code_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/apps-to-get-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-codes-november-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/lazyblox-com-free-robux-ad_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/obc-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/game-free-cloth-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-hack-script-for-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-hack-on-ipad_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
font_00_sfnt_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 22400 bytes
SHA-256: 2e1142bcf8e9cd1a6a69480fe795df8b873757ded1fa1b88a34aa7fb4492cf2c
font_01_sfnt_off00006003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 18920 bytes
SHA-256: e079d7855c4dbce270202aef793088cce0f572f0ad36a45d6e5372222445917a

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