Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a943b074a5391cf…

MALICIOUS

PDF

37.7 KB Created: 2021-05-23 04:50:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a6e870c0784f31999095cbecb898867c SHA-1: 1459a491fdf4f40a2ef825854497e3a9d1bf5a1e SHA-256: 8a943b074a5391cfd35731aa7e64c83007a8889c80f736280ed64e85f5310fd7
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and text that mimic a "free spin" or "generator" lure for the game Coin Master. It also includes a visual download button and a callback lure, suggesting a phishing or scam attempt. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spin-coin-master-link-2021-game-hack, which likely serves as the initial landing page for a malicious payload or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/free-spin-coin-master-link-2021-game-hack PDF link annotation
    • https://shimony.net/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-robux-on-iphone_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_off0000327c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327C 29724 bytes
SHA-256: d845973fee67a4b8dc995d6b58f5c98c91ac0c2c192a4630a3f0ac726065c28d
font_01_sfnt_off000071ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71AE 18456 bytes
SHA-256: e9900cc34792e9e10189734f2c0a95be85fa7d2c8d6cb23872c5da80ce816735

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