Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e382e990ca6028a…

MALICIOUS

PDF

38.2 KB Created: 2021-05-10 14:07:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 63a7b37112ae1ecdb747a383fc12a04c SHA-1: fe99f909a72dcdc9c18d30e9c1c6ee04b3a82934 SHA-256: 3e382e990ca6028aacb90057a55664bb211d14b1d2a9f8164d62f0f1233c0637
122 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator / game hack' and displays a fake CAPTCHA to trick users into clicking malicious links. The embedded URLs point to sites offering game cheats and exploits, suggesting a social engineering attack to drive traffic to potentially malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9536

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/free-robux-ad-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3934 25708 bytes
SHA-256: 47dc2ba59c889fcd010d842c3631ffce8def69e1deb1b051de9ddc32cf589ac5
font_01_sfnt_off000073f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F1 18188 bytes
SHA-256: 8548f8eac6602b4da1df91b5e613954ee993c39611fc0c0834e4b9af2cb2062a

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