Malicious PDF — malware analysis report

Static analysis result for SHA-256 53396d10fa71e434…

MALICIOUS

PDF

31.7 KB Created: 2021-07-19 18:10:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2483fd90ad141a99531e673102d60324 SHA-1: a90c1cc89f8f959a7142cc8afe6f841e8ad63024 SHA-256: 53396d10fa71e4341157989259aaf8f313cf9f147c92af428a25273ec8a655dc
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 0.9900

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 http://netcdn.tw/app/479516143/how-to-get-minecraft-for-free-on-android-game-hack PDF link annotation
    • https://seminolechapter.com/images/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://seminolechapter.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://seminolechapter.com/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://seminolechapter.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://seminolechapter.com/images/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://seminolechapter.com/images/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://seminolechapter.com/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://seminolechapter.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://seminolechapter.com/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://seminolechapter.com/images/huskybuscom-free-robux_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
font_00_sfnt_off00002b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9C 21748 bytes
SHA-256: 90288e3ef4af0adf8643a992d88ed500a759bbbcadd9c3287ff816c8ad8cd401
font_01_sfnt_off00005a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6B 18048 bytes
SHA-256: 8059851acc98585c267d1a0730441da2490f7a27bb6efaac05b05bf58a4bb166

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