Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2483e375e060e89…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 06:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 740988dc1979f351f9fdf82dbdd1ece4 SHA-1: 19c1e758ae277411d282645353d7271a86475e88 SHA-256: f2483e375e060e89c329aa54e2a71595108bcf5d5770b935a8baaf9cf48a7283
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/how-to-make-free-robux-game-hack PDF link annotation
    • https://sparkthis.org/ckfinder/userfiles/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • https://sparkthis.org/ckfinder/userfiles/files/roblox-free-clothes-hack_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_off000033ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33EA 25692 bytes
SHA-256: 7d876a57d12877c3f6db7c9e52022b16d32b3f44b66dda2fa5d07f742cbe4e42
font_01_sfnt_off00006e87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E87 18772 bytes
SHA-256: bc975d0cd3d1d09474d4302e54d359df6d5266f7e81f0636855fd998b44c4aca

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