Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae55d95279e56a5…

MALICIOUS

PDF

44.5 KB Created: 2021-06-10 21:50:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4b902aa16c21c02f1b4cac1e163f3422 SHA-1: 10bf38560513956a017b1f15eb43f9445a6ae725 SHA-256: dae55d95279e56a59cc1e318fafeab0865d88c6c4a8d38b642f7e3412793f6d5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent external URI pointing to a download site, likely for a game hack or cheat. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing indicators further supports a malicious intent. No scripts were extracted, but the overall pattern suggests a phishing attempt to trick users into downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-stylish-animation-pack-free-game-hack
    • http://perpustakaan.iaiqi.ac.id/repository/get-free-robux-gg_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/tiktok-unlimited-free-trials_GM835599320.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/www-robux-us_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-earn-robux_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-change-team-hack_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-roebucks_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/get-free-spins-link-in-coin-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-life-hacks_GM479516143.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-app-android_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/real-working-coin-master-hack_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-and-cards_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-2021-where-to-get-free-clothes_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-free-robux-hack_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/getrobux-info_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f8a.bin
0be4a4a05d2a7c6ba636fa4b37ec6ddd424517b597cfe007498bc7076bbd07dd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F8A 24748 bytes
font_01_sfnt_off00008899.bin
a56476815f2f130cabb3a7182f3cedb3663fcff5942c27724437453edb248505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8899 19328 bytes

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