Malicious PDF — malware analysis report

Static analysis result for SHA-256 2654863e7579e47b…

MALICIOUS

PDF

33.2 KB Created: 2021-07-19 12:25:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e2de12f5a246127221b4f2df906fc5cd SHA-1: 1e2e9180920431cde55a268132f0af69272322d1 SHA-256: 2654863e7579e47b93d1bf529a72a9653232d2f04a4783347a779846cace3d0a
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 0.9953

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 http://netcdn.tw/app/431946152/how-to-hack-someone-on-roblox-game-hack PDF link annotation
    • http://www.my-travel.com.hk/upload/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-minecraft-premium-account_GM479516143.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_off00002ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC5 22796 bytes
SHA-256: ae8cc7932be66344c5628243f7341b76f2790b668e9c5227bacbc263e6b4a7fe
font_01_sfnt_off00005e19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E19 18792 bytes
SHA-256: 9bec9b42a66a3fadd8300817ea8ed63094da1293d480634873ce68f71127e696

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