Malicious PDF — malware analysis report

Static analysis result for SHA-256 02772ffbbcafd944…

MALICIOUS

PDF

48.3 KB Created: 2021-06-07 10:24:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fecc926ef0b2835631265725e10d4c39 SHA-1: c09ca84fb243142088935659dc375f29e9426f49 SHA-256: 02772ffbbcafd944aad9bdd2b2a378cd9167cc19c46ea8a314455dd7de1a4c96
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 0.9871

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.tw/app/431946152/roblox-hack-get-free-robuxs-no-download-game-hack PDF link annotation
    • http://lib.kesdammedan.ac.id//repository/free-pe_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/buy-tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/pokemon-go-free-trades_GM1094591345.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/robux-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-gold-cards-in-coin-master_GM406889139.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_004_off000051dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DD 31672 bytes
SHA-256: 1bd1cfe482a03903b2d33f3c2d47e5141d42bfe34a88bdb7d3cff4a901974619
font_01_sfnt_off00009816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9816 19096 bytes
SHA-256: 20963c4e2bf4d7310af0e3744de645b5b60720ebed214cd2b03330a4c4d72e64

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