Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1d0569a4905a4b0…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 12:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ceac548b7039b610a530d5d1bef9c4f3 SHA-1: 56d45d31d72aca5ec6c84c3b75dc4be657db0d2a SHA-256: f1d0569a4905a4b00d807194e0880e8a129a3436726eeaef6caf4910025a7022
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 0.9447

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/free-roblox-shirts-templates-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/by-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://reggieslockandkey.com/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/latest-free-spin-coin-master-daily_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_off0000301a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x301A 27196 bytes
SHA-256: 1932224e89706320305366f0fe94c9d980efb1b4d1ff46c655c1ba5673273071
font_01_sfnt_off00006e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8E 19000 bytes
SHA-256: 9846c57f19aefef1863ce0f19602eeffc36beb237370d9673c8368dba1a12ee8

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