Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2cde52b734ea2d…

MALICIOUS

PDF

45.6 KB Created: 2021-05-18 03:10:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e5de9610de8d057c7c9c4eaf0b5a10aa SHA-1: 25019edfdc2d08b3e570ed9fc67a0c27d49732ff SHA-256: 6e2cde52b734ea2dc54d9dfeba6698204c5a47bad58d6af774a3ef652026b8da
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages related to game hacks and free items. The ML classifier also flagged this PDF as malicious. The presence of numerous links suggests an attempt to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/coin-master-golden-cards-hack-game-hack
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/fb-coin-master_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-get-free-clothing-on-roblox_GM431946152.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-minecraft-svg-cutting-files_GM479516143.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-send-free-spins-on-coin-master_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-hack-for-android_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-400-spins-coins-master_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-link-for-spins_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-robux_GM431946152.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/get-minecraft-for-free_GM479516143.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-become-a-hacker-in-roblox_GM431946152.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download-ios_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/114-4-hacks_GM479516143.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/master-coin-hack-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bec.bin
617f8978435f955389525eff0f2cba718ba67f0cd998e3e25465574d2f50d0b9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEC 25440 bytes
font_01_sfnt_off00008703.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8703 2840 bytes
font_02_sfnt_off000090b4.bin
adb4edbf0c57abdeeb225f0bd422abdfe2e9b1ff4eb8b752c2c204cd3e2141b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B4 17964 bytes

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