Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39dbe0c196fb5a0…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 04:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c47f8b63fee1a33b0b354da1599c40c4 SHA-1: 2d706411a17c92d0f2e869284efcc44649c6c234 SHA-256: e39dbe0c196fb5a0bb4ce4ecbd85714d5592753aeedba056913957c127a79403
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest it's designed to redirect users to potentially malicious websites, likely for phishing or scam purposes.

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/are-there-any-obbies-that-give-free-robux-game-hack
    • http://digilib.stiki.ac.id/repository/free-robux-club-for-free_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/roblox-hack-me-robux_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/can-you-get-free-robux-on-roblox_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-survey_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-place_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
    • http://digilib.stiki.ac.id/repository/coin-master-free-link-spin_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/games-like-coin-master-for-free_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/apk-hack-coin-master_GM406889139.pdf
    • http://digilib.stiki.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-robux-games_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/lazyblocks-com-robux_GM431946152.pdf
    • http://digilib.stiki.ac.id/repository/free-math-games-online-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e73.bin
5199e8915ac208933ee2bd6631aed85722105051e9bbb9165f62a45566d08d1f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E73 26880 bytes
font_01_sfnt_off00008b3e.bin
0f287355444082a4cd262a23b2f6719152c64f03f0c24fdb629055bbe5d22263		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3E 18924 bytes

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