Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b27cbb1ee4bcba…

MALICIOUS

PDF

37.5 KB Created: 2021-05-22 04:38:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 99000dac0d4dd8fed617ae347b3853a4 SHA-1: 20361540e76be0011ec963154db721cd7cda4e86 SHA-256: 64b27cbb1ee4bcba63866b3588d1338e22e8cad1e39814debdc4bbdbf3142d83
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 0.9447

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.xyz/app/406889139/coin-master-hack-2021-game-hack PDF link annotation
    • http://condit-pack.com/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://condit-pack.com/images/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://condit-pack.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://condit-pack.com/images/tiktok-freepik_GM835599320.pdfIn PDF document text
    • http://condit-pack.com/images/pubg-uc-xtrcom_GM1330123889.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_off000034cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34CD 26776 bytes
SHA-256: 0d13dbdd4821e1956ea7f10d3c76ee94cea1a1cb7a245a3603de4456787edbd3
font_01_sfnt_off000071a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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