Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbdb15d95ca38a01…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 05:36:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4569e3c59c99c702fe38ca526906a021 SHA-1: 581a7c6fecb2eabca0aebf459946249e049dfc3d SHA-256: dbdb15d95ca38a0106b1f4f4ce8771579d929e025d7654aebf30842d6560b667
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are presented as download links for game-related hacks and cheats. The presence of a "download button" heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malware. The document body itself contains obfuscated text and URLs pointing to game-related downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-hax-download-no-virus-game-hack
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/roblox-hacked-version-download_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/best-free-spins-link-coin-master_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-october-13-2021_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/real-free-spins-for-coin-master_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-2021_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/robux-matchcomfree-robux_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-spins-and-coins-com_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/aimbot-exe-roblox_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdf
    • http://elearning.man3pk-kotamakassar.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e66.bin
915ef07ca6b704644117ee7f2a7b64cd960cb2657d02ec2838414a4bfdb54a94		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E66 25448 bytes
font_01_sfnt_off00008820.bin
c700757df4146bcd75611d33c41ed0aca4ff62925dbc333fb331944c4ea3b8c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8820 18772 bytes

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