Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c4505a464f48313…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 05:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 29acad0ca4794171dc42422795d9883d SHA-1: b601fd009fde879b15af62a6fec16a4bf615d864 SHA-256: 6c4505a464f48313ae744190a76bbd41e6f0d78a0dde85073637c6a2cd94c3ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that are designed to lure users into clicking on them by promising game hacks and free in-game items. The primary malicious URL identified is https://netcdn.xyz/app/406889139/moonactive-coin-master-free-spins-link-game-hack, which likely serves as a redirector to further malicious content or downloads. The presence of a 'download button' lure and the ML classifier flagging the PDF as malicious strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/moonactive-coin-master-free-spins-link-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EF 25224 bytes
SHA-256: f1da1b41fdbf4131748c051a9a0cbb46e1bb6f319540c847b60e3ac2df503cc7
font_01_sfnt_off00008378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 3440 bytes
SHA-256: b8401986b530bb748715f403a036b6408862a720222eb6968fe21524df2dedac
font_02_sfnt_off00008edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDF 18168 bytes
SHA-256: 5140a57a6990af64b86c6fc328de463115c3f290c56e1373822c3feaa5dc4a97

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