Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c00c0abd5d5b932…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 11:56:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f0f18787f8e6af85770634e83d4165e3 SHA-1: d9fea340d4320415101a4b5079e7b009457719fc SHA-256: 9c00c0abd5d5b932bb8dcfe4c1488c4f7629997213f8e88a80913b20cf3dc31f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded URLs and a call-to-action phrase, strongly suggesting a lure for users to download potentially malicious content. The ML classifier also flagged this PDF with high confidence. The document body and extracted URLs indicate a focus on game-related cheats and hacks, likely serving as a deceptive front for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/406889139/coin-master-free-spin-download-game-hack PDF link annotation
    • http://pustaka.fti.unand.ac.id//repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/sop-free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-admin-on-roblox-2021-no-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/1x1x1x1-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-a-roblox-account-with-roblosecurity-cookie_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-hack-roblox-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-giveaway-groups_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-tower-battles-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-rare-name-generator-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/hack-version-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/contact-roblox-account-hacked_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fd2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FD2 22740 bytes
SHA-256: dfe38bcb5e7fcfc32650df5f71326f168a012be42e56457393e6703e01d89d5f
font_01_sfnt_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 18756 bytes
SHA-256: a0866289d0ce43df37912342f65a9428a0679980fc9fde786a6df1a60cf71805

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