Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c931b407169819…

MALICIOUS

PDF

36.5 KB Created: 2021-05-22 12:49:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c8a6b85fe10bb02d45b1e5bc72c6ca7f SHA-1: 0adacea8856a91cace59c8072ec9a3b32b4451ea SHA-256: c8c931b40716981997876fb391780a6bc523460e1cb66aa7a56d259676227a8b
62 Risk Score

Malware Insights

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

The PDF document contains lures related to 'Coin Master Free Spins and Coins 2021' and includes a prominent call-to-action link to download a generator. The presence of multiple embedded URLs, including one directly related to a 'coin master hack apk 2021', strongly suggests a social engineering attempt to trick users into downloading potentially unwanted or malicious software. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/coin-master-free-spins-and-coins-2021-game-hack
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/games-in-roblox-that-give-you-robux_GM431946152.pdf
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/cute-free-stuff-on-roblox_GM431946152.pdf
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdf
    • https://elearning.mtsn1tasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000349f.bin
c6b67eb0c0fa182d8ecb9e83ed694277c3a7cf905b6fd59dab9ebf43b19826f3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x349F 25484 bytes
font_01_sfnt_off00006cc0.bin
c259e1f543e24e5bfe6ce8cf601a342cc00786119f62dbfadbed712250492c46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC0 18460 bytes

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