Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0da1d3e8a5d82a5…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 17:48:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 68b669c523f2f2aa8a2af4220c50abe8 SHA-1: 6a9c4d670503f9f87ce171e0980c454d4492613b SHA-256: a0da1d3e8a5d82a5e152ff0bb8fb5330b2cdca806f33e73421ce56d7f080d189
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as download lures for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to drive traffic to potentially harmful content. The document's content and structure are consistent with a phishing or malware distribution attempt.

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.co/app/431946152/roblox-shinobi-life-cheats-game-hack
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/roblox-com-hack_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/how-to-get-free-roebucks_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/free-spins-on-coin-master-game_GM406889139.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/coin-master-free-spins-2021-apk_GM406889139.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/roblox-catalog-free_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/minecraft-fly-hack_GM479516143.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/invisible-hack-roblox-prison-life-withe-cheat-engine_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/free-robux-offers_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/www-roblox-com-robux_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/claimrbx-free-robux_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/how-to-inject-dll-roblox-hack_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu/repository/how-do-you-get-free-roblox-robux-in-roblox_GM431946152.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/is-java-minecraft-free_GM479516143.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.litbang.kemkes.go.id/tawangmangu//repository/how-can-i-get-minecraft-for-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c9.bin
b77007d22c5c55cb767820bb8cb9fc04822e7e748930af0e9c17cbc25d70c828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32C9 22660 bytes
font_01_sfnt_off00006532.bin
42970dc2162cb20d503e966261d61d98f9c2f7fb0612f67a1562b57823074340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6532 18876 bytes

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