Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c3f1a14cdfe481…

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 16:06:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 162ad6d7260fe718a4383d8277561060 SHA-1: 16f512568db4cc78d4ba5e7ef3a0343ea2987aae SHA-256: 33c3f1a14cdfe48187f123e0874069d1e674cbdc4bba59657c9ef5eb25fe2901
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 0.9865

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/oblivion-hack-roblox-game-hack PDF link annotation
    • http://www.zdravazena.sk/images/roblox-hack-robux-and-tix-cheat-tool-youtube_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/robux-claimer_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/mathep_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/nathorix-hacker-free-robux_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.zdravazena.sk/images/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.zdravazena.sk/images/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://www.zdravazena.sk/images/how-to-get-free-cards-on-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
font_00_sfnt_off00004ec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC9 27172 bytes
SHA-256: 2259bb9e3e91af721a930c984f994ffc9180ce8ea08fbb61b2ec1b88a59caa71
font_01_sfnt_off00008c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5F 18416 bytes
SHA-256: c3159716eb58a324cb2234a1451711cef7d47f6aba6d8e0cea74b9d850a312cf

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