Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d34effb7475280…

MALICIOUS

PDF

42.4 KB Created: 2021-05-15 06:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b4ecb02d6ec6c342a8f8ea2e484eec7f SHA-1: 0285ebf19581786d06db591175651f006c9a0bfa SHA-256: 95d34effb7475280e3df3f547d3dd751fc449da63a9f00827bca999b92bc4e23
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-to-send-gold-cards-on-coin-master-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b9f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9F 24868 bytes
SHA-256: e8bec1a2a02af2326f102e21ca461fbb8f58b5fe3f7100e6881bab42b93fc2f1
font_01_sfnt_off0000843e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x843E 17964 bytes
SHA-256: e2853e1c2c645fdc8629f9cde282bdb9d0f8409463fce32bf7f40a0a6bdcc456

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