Malicious PDF — malware analysis report

Static analysis result for SHA-256 57788c67ada3cfc1…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 12:19:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0e57782d3abb223b40abcf8bedc090bf SHA-1: 5b7b81563400324f41ee3e7bed02223425e81aa5 SHA-256: 57788c67ada3cfc1b4082e6735dc4e8e212f3200bb8ce4dc5ac843a493d991fd
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an external URI pointing to a URL that appears to be a lure for downloading game hacks or cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs related to popular games further supports a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/835599320/tiktok-free-to-download-game-hack
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-ios_GM479516143.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coinmaster-twitter_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-program_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/moonactive-free-spins_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-spins-coin-master-links-blogspot_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-coins-for-flip-master_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/pokemon-go-free-shiny-eevee_GM1094591345.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-generator-com_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/roblox-top_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/how-to-find-coin-master-free-spin-link_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/free-spin-coin-master-iphone_GM406889139.pdf
    • http://www.indokashcrafts.com/uploaded_files/userfiles/files/coin-master-apk-hacked-3526_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c0.bin
f709943959b7178a18ec0a1a6c71d510a7b721d27f8400cdf74c8db80b7cbbb1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C0 24788 bytes
font_01_sfnt_off00008155.bin
85b9e83cd36ac33553e439d683173ccc6523a6ffacc41c69a8b8ac638077021a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 18264 bytes

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