Malicious PDF — malware analysis report

Static analysis result for SHA-256 003b0b75d85a1b3d…

MALICIOUS

PDF

46.1 KB Created: 2021-05-15 02:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 52a7d49e693185e31dcf44e2b342e62c SHA-1: d18d3e91fae8047a3b30508b45327df9b97c8dbd SHA-256: 003b0b75d85a1b3d5b6a138db8dbd71fad2208153c4dd43563fd7bca0ae1fad1
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external files, many of which are also PDFs, suggesting a link farm designed to distribute malicious content. The document body and extracted URLs indicate a lure related to game hacks and cheats, aiming to trick users into downloading further payloads. The presence of a PDF URI heuristic and a link farm detection strongly supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/mcpe-master-hack-unlimited-coins-latest-version-game-hack
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-hack-tips_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/earn-rbx_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/how-can-you-get-free-robux_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/windows-10-minecraft-hacks_GM479516143.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-en-espaol_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/free-domain-for-minecraft-server_GM479516143.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-for-iphone_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-coins-cheat_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/minecraft-iphone-free_GM479516143.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/how-to-get-free-outfits-on-roblox_GM431946152.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-pc-hack-download_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdf
    • http://learning.mtsn3banyuwangi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049b7.bin
3d0592c1e7b616c87e17af0fdc39d0cdd39d4f1ecd047b3411cdb9ceaa85707b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B7 26592 bytes
font_01_sfnt_off000086a2.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86A2 2840 bytes
font_02_sfnt_off00009053.bin
9a564b0c0a644540a66c1b1ff06b652386e2dfb1d0e582b0e17ab2c442631031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9053 18720 bytes

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