Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cab91c405d6df4…

MALICIOUS

PDF

39.3 KB Created: 2021-05-10 14:09:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0d8fa7d19da105624db819eff9e8b92c SHA-1: 084a7c99a9985cd23d39414e9c301be195585d2c SHA-256: f9cab91c405d6df422f35babcc48874ec4164011ed1a360d81bdf32e097f2188
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', designed to trick users into visiting malicious websites. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-100-spin-game-hack, which is likely a redirector to a phishing or malware distribution site. The document's content and heuristics strongly suggest a social engineering lure for game-related cheats or hacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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/406889139/coin-master-free-100-spin-game-hack PDF link annotation
    • http://www.evaplast.by/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-free-spins-and-coins-2021_GM406889139.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_003_off00003ca8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CA8 25956 bytes
SHA-256: 8ca593e9c929940375089a66110ea91c8327f83c00dd0177cd70e6cb9b9b314a
font_01_sfnt_off00007819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7819 18164 bytes
SHA-256: 800d71d7e114c4c05b2dd385530797077dc4929300c15f9784e394d114ae6aaa

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