Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc8a9a74e9ae0889…

MALICIOUS

PDF

44.7 KB Created: 2021-05-13 10:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 764307ed4276b386affff99762b19c8f SHA-1: 81197636e9a8cd669cdab264158b5fa7b686eb67 SHA-256: fc8a9a74e9ae0889b220b47c17b5f41b2f3af4dc2e85085d8a95802443ab4ee4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly mentions 'how to get free food on Coin Master' and various game hacks. The ML classifier strongly flagged this PDF as malicious. The presence of external URIs and the lure of free in-game items suggest a phishing or scam attempt, likely leading to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/how-to-get-free-food-on-coin-master-game-hack PDF link annotation
    • http://www.art-concept.gr/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/roblox-hack-site_GM431946152.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_off000048d9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D9 24152 bytes
SHA-256: f7f27469f7227c075105c0e48958eedc764636e75040bc27e19a88e021e21c4c
font_01_sfnt_off00008027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8027 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAD 18048 bytes
SHA-256: 80f71b64fdae1376f671ee29083f27768c0f143acc59e91e746c89af89705883

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