Malicious PDF — malware analysis report

Static analysis result for SHA-256 df174282b260d7f7…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 05:55:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1e810b618cd172323207a692a8e1f304 SHA-1: 356e545119b904d20416fef941946d774328b1e3 SHA-256: df174282b260d7f77da5d76a3d206d76db43d5efc0622bbc35a0b8555762ac78
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 0.9796

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.online/app/431946152/free-limiteds-roblox-game-hack PDF link annotation
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-hack-roblox_GM431946152.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
font_00_sfnt_off00005281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5281 25692 bytes
SHA-256: 1ad492ca67cd3b8be03c0477551deb4922aa9841a4b8819a7118abd6e14f4740
font_01_sfnt_off00008d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D63 3608 bytes
SHA-256: 38b270e1156baf55f52eefd6c0272d25f41d6b4ef7b6a9aa3301989c4dacee27
font_02_sfnt_off000099ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99EC 18604 bytes
SHA-256: cd6e3b888b69b87eccf2bd9bf0eaf83aa01cccd071b198ee6fa00879ae765b94

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