Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ffa4cfe8df30fb…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 22:44:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f158871c621e1abd9e937aac9999f660 SHA-1: d0cc780694f613d648247ccc8be75ace90630e87 SHA-256: 14ffa4cfe8df30fb9f6fed64519d2c9dd7a0beaa0dc18644d7336ffc4238f2fa
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 0.9864

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/how-to-get-free-robux-without-verifying-2021-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pubg-uc-in-cheap-price_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-accounts-2021-september_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/tiktok-free-hearts-2021_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-coin-master-without-human-verification_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_off00005228.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5228 25372 bytes
SHA-256: 61f70b80a5fbfbe65d360a4311900c783d5a1faef98c1199d6d416e87e719574
font_01_sfnt_off00008bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD5 19772 bytes
SHA-256: 854662d4ed02eaea1b0a0020fc7ac25fa5b331288bf96b43491be4028b138ed1

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