Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4bbf60c57a2d9c…

MALICIOUS

PDF

50.0 KB Created: 2021-05-24 17:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7e06eeaecc7ca54bdf97bab466b170ee SHA-1: 1bbb708bd2103b7477ee64931421bb14edc05c14 SHA-256: 0d4bbf60c57a2d9c1e7043f57d053aafbe37884d63732bc5dcfb594e120e007b
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 0.8589

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/431946152/how-to-get-free-robux-without-doing-anything-game-hack PDF link annotation
    • http://rzt.com.ua/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://rzt.com.ua/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://rzt.com.ua/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://rzt.com.ua/images/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://rzt.com.ua/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003563.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3563 28016 bytes
SHA-256: 55fa3699afd19dd6a072894426c19b3e75869072bb3e8d6e00024aecddeb04ae
font_01_sfnt_off000076f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F3 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off000091da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DA 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00009eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEB 19400 bytes
SHA-256: 843e7c6de0628ecb74dfde19cdfb212261a67f0d6d996bc16e2547f6c0bce3d3

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