Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb5180f22f274b9…

MALICIOUS

PDF

36.1 KB Created: 2021-05-20 20:19:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 68b29435a227b996764351001e13eabd SHA-1: 86041abe5285bfdf7d7a07e490d9281c159f2e82 SHA-256: 6cb5180f22f274b9c321789753b09480c2126548d91b55878dd7376c208816e1
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 0.9492

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/479516143/minecraft-multiplayer-free-game-hack PDF link annotation
    • http://razredna-nastava.net/files/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/robux-generator_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/send-me-500-2021-spins_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003380.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3380 24952 bytes
SHA-256: 03ecae20cf95bb8b550e2d4fddc7f18a6af011c20ca46715dc7515145219bac8
font_01_sfnt_off00006c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C56 18136 bytes
SHA-256: 22c65de64af2721f6fc37241b86838ece151de043079d0e804f5da14bd34918b

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