Malicious PDF — malware analysis report

Static analysis result for SHA-256 77dd2a937b9d87c9…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 23:19:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 067a8a2205e10cdb3f76b17672242991 SHA-1: 2c002c8a37d9bc14aa69947a0ff57266da3bedd3 SHA-256: 77dd2a937b9d87c9c77d67a5f6327a6bbc8b0009e17ea32f8dd5614695ef5d85
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a document body that explicitly promises methods for hacking into game accounts, such as Roblox. The presence of a download button lure and a machine learning classifier flagging the PDF as malicious strongly suggests a malicious intent to trick users into downloading further malware or visiting compromised sites. The primary IOC is the external URI pointing to a potential download location.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-hack-into-other-peoples-account-on-roblox-game-hack
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-fun-com-robux_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/minecraft-for-ipad-free_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-free-coins_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/krnl-download_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/hack-roblox-pastebin_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/windows-roblox-hacks_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-generator-codes_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/collect-robux_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/hack-coin-master-343-apk_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/roblox-free-wings-in-catalog_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/shirt-creator-roblox-free_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/files59-roblox-hack_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-gift-link-hack_GM406889139.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/cheat-engine-for-roblox-download-free_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/actual-free-robux_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-robux-with-no-survey_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/how-to-hack-tower-of-hell-in-roblox_GM431946152.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/free-minecraft-client_GM479516143.pdf
    • https://stikes-alinsyirah.ac.id/perpustakaan/repository/coin-master-hack-spin-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000307f.bin
4bb7e5c0a722a99484d8773fd6529ee3109700705211c4be27284d8e9eaa40e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x307F 22544 bytes
font_01_sfnt_off000062ba.bin
a7e40e95de04861797e457c41c290f631ff3184dc02e1037eb43e6930c944dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 19560 bytes

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