Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5d224b3fbc4ccc8…

MALICIOUS

PDF

42.6 KB Created: 2021-05-10 20:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d9591657b266437a8e3b0ddb8087ada7 SHA-1: ba94cdb00ad1be544499e749aa78313c53ddede7 SHA-256: a5d224b3fbc4ccc8814b6a3aee8cac30aaa7fad642ebfc48ed637fd8b6d852c3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and heuristics indicating it's designed to lure users into clicking a link, likely for malicious purposes such as downloading malware or phishing. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of external URIs and the document's deceptive content suggest an attempt to redirect the user to a compromised or malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/will-minecraft-ever-be-free-game-hack
    • http://raqam.net/uploaded_files/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/best-minecraft-hacked-client_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/roblox-hacked-accounts-list_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-hack-programers_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-hack-coin-master-game-without-root_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/roblox-hack-me_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-free-spins-heaven_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/free-spin-coin-master-app-download_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/oprewards-points-generator_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/what-is-a-minecraft-client_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/roblox-download-pc-free_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/hack-coin-master-apk-31_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/coin-master-spin-rewards_GM406889139.pdf
    • http://raqam.net/uploaded_files/userfiles/files/rbx-land-free-robux_GM431946152.pdf
    • http://raqam.net/uploaded_files/userfiles/files/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdf
    • http://raqam.net/uploaded_files/userfiles/files/free-robux-websites-that-work_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b5f.bin
0edb55a7f84a2baa72a0d7e3fbc1afdec60cef4218e5863c8717133237fce36c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B5F 25024 bytes
font_01_sfnt_off000084a7.bin
211f984956e508daade61d8eb22376d96f7c6cd7f6bdb04149b2d856b5b09752
pdf-font-stream PDF embedded font (sfnt) at offset 0x84A7 18168 bytes