Malicious PDF — malware analysis report

Static analysis result for SHA-256 78bffc6c88d84373…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 11:49:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5f2a5d5bcda819bc41ff2295ed2275a6 SHA-1: 3855a3c50a0d5bc5e73888828758e183003082a0 SHA-256: 78bffc6c88d84373555260447b53c9eb77f499763d41b1c9b3fcc35c6321ed9f
62 Risk Score

Malware Insights

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

The PDF document contains an embedded URL and a visual cue suggesting a download, masquerading as a Minecraft hacked client. The ML classifier strongly flagged this PDF as malicious, and the presence of an external URI further supports a malicious intent to redirect the user to a potentially harmful download. The document body, though partially corrupted, contains references to the lure and the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.online/app/479516143/minecraft-hacked-client-game-hack
    • http://perpustakaan.stietenggarong.ac.id/repository/need-free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/earn-rbx_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-coins-on-pokemon-go-free_GM1094591345.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/hack-to-protect-village-on-coin-master_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-gift-card-free_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-group-free-robux_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-vip-server_GM431946152.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/moonactive-free-spins-link_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-hack-coin-master-computer_GM406889139.pdf
    • http://perpustakaan.stietenggarong.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005168.bin
d8594b293edc9c85d0c97ac275ff3864e8ebf1d45dcda4459ce8739fdb92cffa		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5168 27156 bytes
font_01_sfnt_off00008e63.bin
60084e38a3b13cc374d8b54708ec2a3852040562095209170bda5240b53bf335		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E63 17988 bytes

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