Malicious PDF — malware analysis report

Static analysis result for SHA-256 f20670778833b6a9…

MALICIOUS

PDF

56.3 KB Created: 2021-05-16 10:12:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f5176659255a07197ff0dbf0a36ac0a SHA-1: 4fb94ad6b6e228021b0dddfb99208e5877787981 SHA-256: f20670778833b6a9a7ea24508e7ffe5774c98ff2967f46ae0f801f02e0f9a714
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, forming a link farm, that direct users to websites offering game hacks and cheats. The document body, though partially corrupted, contains references to 'Coin Master Free Spin' and a URL associated with such content. This suggests a malicious intent to lure users to potentially harmful sites, likely for malware distribution or phishing, leveraging game-related lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8162

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-free-spin-and-coin-game-hack
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/50-free-spins-coin-master-links_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-roblox-hack-us_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-and-coins-hack_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-generator-hack_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-spins-coin-master-march-2021_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-no-human-verify_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-pet-food-links_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/how-to-get-free-robux-no-scam_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/coin-master-how-to-get-free-pet-food_GM406889139.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://elearning-mtsn3ppu.azzahra1.xyz/__statics/gudangsoal/files/free-spins-coin-master-2021-glitch_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f57.bin
e2f6798960e9087920e967a3570b0e17eca5fe8c39d5078ab925b5641340a6a6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F57 26496 bytes
font_01_sfnt_off00008dca.bin
e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCA 3088 bytes
font_02_sfnt_off00009895.bin
cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9895 7960 bytes
font_03_sfnt_off0000abba.bin
7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABBA 18060 bytes
font_04_sfnt_off0000cd12.bin
fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD12 4272 bytes

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