Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ab68a17bdd8791…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 01:31:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ef981ac2e3cc75dd22ae383eb9928b7f SHA-1: 8877058ce11ab6c78fdd1c9363d877eb011f5397 SHA-256: 97ab68a17bdd879163f63bb21b823b8eebea35e08a2dff260e7e567bf5b6ae1f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9492

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/431946152/cute-free-roblox-clothes-game-hack PDF link annotation
    • http://butkimloai.com/images/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://butkimloai.com/images/freerubux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-daily-free-spins-link-today_GM406889139.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_off00003294.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3294 24920 bytes
SHA-256: a510b102afb855c91322ba7f670c3c6417324674c22d5cefa4a2eb7069acd486
font_01_sfnt_off00006c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C30 18360 bytes
SHA-256: e86e78400892ae5dd4aa52b188d1114de395e07e4f293bb7f48ee2d479d87499

Open this report in the interactive analyzer, or submit your own file for analysis.