Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df54da6361b94a5…

MALICIOUS

PDF

36.7 KB Created: 2021-05-20 14:16:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1590d07733b9f73eacdf0d31c0c5c01c SHA-1: aa0aac748bd5322bf0e1dc2ffb5ceb019ffae542 SHA-256: 5df54da6361b94a51c690098d5127eaab7bbcebb8529b0b0ce1b17ee4779c8d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with a primary focus on a lure for 'free game hacks' and generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of the URL 'https://netcdn.xyz/app/479516143/minecraft-free-exe-game-hack' strongly indicate a phishing or scam attempt. Although no scripts were explicitly extracted, the nature of the lure suggests it is intended to lead the user to a site that may host further malicious content or exploit kits.

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/479516143/minecraft-free-exe-game-hack PDF link annotation
    • http://www.ma-plast.hr/files/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-roblox-generator_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
stream_002_off000035e7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35E7 25476 bytes
SHA-256: 197ab14372d94771570df87d019d4bf34a4fa9a28bbb3a3a1b430614cd417314
font_01_sfnt_off00006ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 17780 bytes
SHA-256: 184f68a403119e274d74e0b6050f83bd20a8f42ea09f5a6442f850a022aaf90d

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