Malicious PDF — malware analysis report

Static analysis result for SHA-256 e827590e2fed90ab…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 03:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cc9593c3b8bf29b5f8745471eeff694a SHA-1: 0b59abc0211bbc9b6cbe37cf17a0d0bac3dc5ec4 SHA-256: e827590e2fed90ab49b00e8e92c4b770df30bb42e49e670d0b3ff6db89e2df76
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free downloads, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or redirection attempt to a site that likely hosts further malicious content or exploits.

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/479516143/minecraft-pe-free-download-ios-no-jailbreak-game-hack PDF link annotation
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.man5crbn.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-for-free_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
stream_002_off0000360f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x360F 25164 bytes
SHA-256: ebfca2e9700ab08903afd332e2aa73ea54832af222af0a8bf7fc1dfc1f6c23ba
font_01_sfnt_off00006e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9A 18940 bytes
SHA-256: 384c56943b2f0ce7dd032d42d48bdddf0ac3b313714fbbfa672311f45c441041

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