Malicious PDF — malware analysis report

Static analysis result for SHA-256 d04fbde2cd41214f…

MALICIOUS

PDF

35.0 KB Created: 2021-05-20 22:46:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 43d1cd926a3035610779c6190e0b954c SHA-1: 8bec201a3eca624ffc624078ff79b4a637dcfe53 SHA-256: d04fbde2cd41214f9554a294d7060e319278a1e23b6714e5b9c19df2035ac379
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with a primary URL pointing to a "roblox-speed-hack-game-hack". This, combined with heuristics indicating a game hack lure and urgency, suggests the document is designed to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/roblox-speed-hack-game-hack PDF link annotation
    • http://eltisstudio.sk/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://eltisstudio.sk/images/free-robux-games-on-roblox_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_off00002dfe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DFE 24444 bytes
SHA-256: ec87f178253b858d9c4482631b3d70048866b56cc1ff14c83a2546350c585708
font_01_sfnt_off00006664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 18532 bytes
SHA-256: ecd25e1cae784267f5a646f1b70b1ce742945d3ce40e95dc5b3aacf46c412aa4

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