Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc29792d784204e4…

MALICIOUS

PDF

47.0 KB Created: 2021-06-04 03:56:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e98dec93f6bf4080c19bc4235ddba9b9 SHA-1: a998ef1f14f05e6a03e2ef91c2026731190a45f8 SHA-256: bc29792d784204e400f9df57ef23dcf7ff2901f28a7abe23394720002f8da8a6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, identified as a link farm, that point to external websites offering game cheats and in-game currency. The ML classifier strongly indicated maliciousness, and the presence of these links suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-hack-game-hack
    • http://e-library.akbid-purworejo.ac.id//repository/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/robux-money_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/hack-card-collection-coin-master_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/roblox-com-free-play_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/hacks-para-roblox_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-spin-codes-coin-master_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-game_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-free-shield_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-free-spin-whatsapp-group_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/cm-free-spins-and-coins_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/free-robux-real_GM431946152.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/coin-master-free-spin-ml_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id//repository/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdf
    • http://e-library.akbid-purworejo.ac.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005300.bin
cc7990be64ce35f2e9251f51339b72a8e4f7242e37573b81a9d56b0cf7a1bc9c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5300 24956 bytes
font_01_sfnt_off00008bdf.bin
a0d6c1ef1f7405ab05245801e4abbc2877925f97898db53811df9ab010e978fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BDF 2824 bytes
font_02_sfnt_off0000957d.bin
654168d3b6bcb61be570e1238605831ee66fed80d87ac67967dd188319cba9ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x957D 18056 bytes

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