Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4cf22ff7037ffb2…

MALICIOUS

PDF

41.9 KB Created: 2021-05-11 02:12:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e4e9d9ff0f6b03ae28a225d80f633de SHA-1: 36f221ddfc2ef80f0ff94060ce190fbb95e4fb60 SHA-256: f4cf22ff7037ffb2d0246b153dcaf17d47ce8a526ea4a3f95213a6c7d7bfa0b0
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/link-for-free-coins-in-coin-master-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.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_off00004926.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4926 24776 bytes
SHA-256: 5e19b5cc2969f1bb61c531f7b32661cd982b7b1919da15f1a9aad29be921b3dd
font_01_sfnt_off000082b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B2 17880 bytes
SHA-256: 2ba4049ee856ee16a7338789b9de70a28ae5aa09727d52a30852826d07af8f7c

Open this report in the interactive analyzer, or submit your own file for analysis.