Malicious PDF — malware analysis report

Static analysis result for SHA-256 a23cfa8d66e65b09…

MALICIOUS

PDF

39.0 KB Created: 2021-05-22 23:11:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e79c58fc5d658edf28e1d0a8567da856 SHA-1: 9b9622f477b58eafb46e96257da4367af007bd77 SHA-256: a23cfa8d66e65b0930f4b94993593f04fc26ec4416f79d51f672c6168b815a11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, primarily offering 'game hacks' or 'generators' for popular games like Minecraft and Roblox. These links, such as 'https://netcdn.xyz/app/479516143/minecraft-name-tag-hacks-game-hack', are designed to lure users into clicking, likely leading to further malicious downloads or phishing attempts. The presence of these lures and the ML classifier's high confidence score indicate a malicious intent to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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-name-tag-hacks-game-hack PDF link annotation
    • http://montchanintt.fr/images/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-not-a-scam_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
stream_002_off00003443.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3443 30256 bytes
SHA-256: ca60be16ade4349ae540ffb7bbb6f3940de3cf5057ba2ef262419197a63ee014
font_01_sfnt_off0000778a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778A 18288 bytes
SHA-256: eb7ed4260d6d64c3cd9f3242d6af3157cea31df7eff6e4be90ec8e6c005c47d1

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