Malicious PDF — malware analysis report

Static analysis result for SHA-256 f027c4b7374d397e…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 00:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3b3fcdb480be9047ee807c3a3d8f34a3 SHA-1: e74c244fe828e5c5754c522ed40127c6abbf0fb1 SHA-256: f027c4b7374d397e83fd8d7f3c779d83e0993e2157212e5d191000d36fd16825
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a website offering PUBG UC, which is a common lure for scams. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/1330123889/where-to-buy-pubg-uc-cheap-game-hack
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-roblox-website_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/minecraft-maps-pe-free-download_GM479516143.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-gen_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-robux-fast_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-hack-iosgods_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-apk-mod_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/worst-client_GM479516143.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/easy-way-to-get-robux_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-hack-game-download-ios_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-spins-2021-app_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-roebucks-no-human-verification_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/instagram-free-coin-master-spins_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-robux-hack-2021_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-generator-2021_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047dd.bin
6302d6a094ffa7b30d953acb5b6ca5d4785e9e123e8c60284e4fd076e6f1d0e4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DD 25144 bytes
font_01_sfnt_off00007f5d.bin
e44126da92444ab4958627586bd49b3c2691f955e8773dcdc57bced008721f23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 18988 bytes

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