Malicious PDF — malware analysis report

Static analysis result for SHA-256 e922af092f3c0fb7…

MALICIOUS

PDF

33.6 KB Created: 2021-07-21 02:51:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 454e72693442886599cf2147486ab1ad SHA-1: 932dd1defaa5d3e93bb04e1c4ef5e41fe8e14f3a SHA-256: e922af092f3c0fb77bbf9e82f43bf31eda749b791cd24c6109f2664ce5a2a41d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to a 'coin-master-free-daily-spins-game-hack' URL, indicating a lure for game cheats or in-game currency. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL and the 'game hack' lure suggest the document is designed to redirect users to a potentially malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://netcdn.tw/app/406889139/coin-master-free-daily-spins-game-hack PDF link annotation
    • https://www.belgium-archery.be/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://www.belgium-archery.be/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-site_GM431946152.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_off00002cf9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CF9 23256 bytes
SHA-256: 79b436d655d68a7c6845efe83d08701464d348c762bfb23b55adbb8a88f389f9
font_01_sfnt_off00006134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6134 18308 bytes
SHA-256: 5c3cefeee4a209382fad51155f4ab19c665f35dca270fe96ae1b58d23c3d8f95

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