Malicious PDF — malware analysis report

Static analysis result for SHA-256 bea71bf64b069764…

MALICIOUS

PDF

40.5 KB Created: 2021-05-17 14:17:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 392d5cf274e3ff981ffb34ece5e123fd SHA-1: 91468703233e3bcba5cb3bdac04353efc85475b2 SHA-256: bea71bf64b069764d174512cdefdd3dc2d692efde71c00408f8eb5efd3343f95
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document was flagged as malicious. 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 clean score 0.0128

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/roblox-svg-free-game-hack PDF link annotation
    • https://www.bandicam.comIn 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_003_off000032e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E1 28428 bytes
SHA-256: ad9bfef880eb29e3b27537bd49d52935d7108d72293a4189ee9ac75a32c47277
font_01_sfnt_off000072e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E5 2836 bytes
SHA-256: fd98c8f6e7c2e74bbd5822409159a93ac5c94da083ae4c2eb269d4284375f9e8
font_02_sfnt_off00007c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8B 18348 bytes
SHA-256: 82620550cff65874d98c2836b8a60b7f72357efbb651992cfb4f65634f65914f

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