Malicious PDF — malware analysis report

Static analysis result for SHA-256 58552487e84958c0…

MALICIOUS

PDF

35.3 KB Created: 2021-05-22 02:25:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b428862614ce0db4e104da90be78a4c SHA-1: 295f17859dc3576a64b82d958a67b26da947d74c SHA-256: 58552487e84958c0ec05817db02181a3b451a5d18de6bde3c562d1a5dc089933
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 0.9505

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/835599320/how-to-get-verified-on-tiktok-for-free-2021-game-hack PDF link annotation
    • http://riccardodurso.it/images/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://riccardodurso.it/images/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://riccardodurso.it/images/coin-master-free-spins-and-coins-for-today_GM406889139.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_off00002fab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FAB 24484 bytes
SHA-256: a6eb683c95aa302596dd5c6ad961316467a831e8728326863fd2f9f7b7c28eb4
font_01_sfnt_off0000683d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 18328 bytes
SHA-256: 1054070171948e30c43aa2372c28bb4586f99f9ebf927238267b96eb5d2dcf67

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