Malicious PDF — malware analysis report

Static analysis result for SHA-256 e41c1c3efab96b88…

MALICIOUS

PDF

44.6 KB Created: 2021-06-11 02:50:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7db43a9d75d91731d416fee3eecdaf65 SHA-1: ad12c02ab8a880aaa0cff773e04d8810d6700993 SHA-256: e41c1c3efab96b88029586d1cdac1cff1149477069334aa32a749de54e901d2e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains embedded URLs and a call-to-action phrase, strongly suggesting a phishing or scam attempt. The primary URL points to a site offering free game accounts, likely a lure for malware or credential harvesting. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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/free-alt-accounts-roblox-game-hack
    • http://poltekkesbanten.ac.id/e-lib/repository/daily-coin-master-free-spin-link_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-ios-cydia_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hacks-xyz_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/get-free-robux-now_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-cheat_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-roblox-games-with-scripts_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/create-free-account-roblox_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-followers-on-tiktok_GM835599320.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-script-hack_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spin-and-coin-links_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-only_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-legit_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/unlimited-spin-coin-master-hack_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-hack-mod_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/hack-para-roblox-2021-mayo_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-hack-codes_GM431946152.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/download-coin-master-apk-hacked_GM406889139.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/minecraft-bedrock-free_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/free-op-minecraft-servers_GM479516143.pdf
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-gift-link-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005180.bin
ddd0670cf7b103588d3702e6a93462872dffd1ee164675e10aaab28e06c4da00		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5180 25988 bytes
font_01_sfnt_off00008be0.bin
da9216f33c705cf1cb558e36217bf500f5d1073324c4df553b885be53ca13965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE0 18192 bytes

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