Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b97309e3fd8b70…

MALICIOUS

PDF

43.4 KB Created: 2021-05-17 07:02:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d059227652eb45dc2b8df98a981dbc43 SHA-1: 0c248d2a88987a5d0c78752cf007a38a57445ff5 SHA-256: b3b97309e3fd8b70ea84edd9b6f2da7f358821df4ecd6e877b1c59f0f4bf2c48
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a visual download button lure, strongly suggesting it is designed to trick users into downloading malicious content, likely related to game cheats or hacks. The presence of a callback lure further indicates a potential social engineering or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/roblox-hack-ga-game-hack
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/will-minecraft-dungeons-be-free_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/free-spin-coin-master-2021_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-today_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/roblox-free-robux-website_GM431946152.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/minecraft-fly-hack_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/robux-for-kids_GM431946152.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/mcpe-com_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/minecraft-pe_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-free-coins-link-march-2021_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/free-minecraft-skins-java_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/minecraft-pe-hack-client_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/minecraft-mod-updater_GM479516143.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/free-coins--spins-coin-master_GM406889139.pdf
    • https://disperkim.samarindakota.go.id/file/images/ckeditor/files/robloxheroxyz-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f26.bin
91ca7588e109cbfa058936d4b18fc9f805aea43ca9ed287c96ecde1dcfa9b7cb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F26 24896 bytes
font_01_sfnt_off000087b1.bin
3275d650180bfb45a9fb7d5756aac43dcbbafe87c7818dab7a1b2e1f44194404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B1 18184 bytes

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