Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a0252cc75e4cd3…

MALICIOUS

PDF

39.6 KB Created: 2021-05-19 23:45:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 28b5ab9fed59ea5cd5de347485b17029 SHA-1: ae4985f44308d0d7cd830f6a2fb5cb52af63a40c SHA-256: f2a0252cc75e4cd3763c4d5c50183d6e1481d4ca4489eaaee68e7b1aed3a2be7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack lure. The document body and embedded links point towards a 'Coin Master' game hack, which is a common social engineering tactic to trick users into visiting malicious websites. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-link-2021-game-hack, which likely serves as a redirector to a payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8603

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-link-2021-game-hack PDF link annotation
    • https://www.ayampotongsyariah.com/ckfinder/userfiles/files/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://www.ayampotongsyariah.com/ckfinder/userfiles/files/roblox-hax_GM431946152.pdfIn PDF document text
    • https://www.ayampotongsyariah.com/ckfinder/userfiles/files/how-to-use-wurst_GM479516143.pdfIn 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_off000035d7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35D7 24924 bytes
SHA-256: a0f04cf36962233b1d173475d430b665aaf73c780c3b58f00d04159e6e4e903e
font_01_sfnt_off00006f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F15 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off00007900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7900 18284 bytes
SHA-256: be459003f2db1a934c49859962f2962ce704e042ee0985c73311b64c11e09449

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