Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3daa9b9d6f205c6…

MALICIOUS

PDF

44.9 KB Created: 2021-05-10 23:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f271f14dfc634b065c2dfff5e40fb045 SHA-1: c237dd4c28a7e73a6cfb55176e2ffb3fa91bc7fd SHA-256: d3daa9b9d6f205c6556c03031ce92c7200d46a10ba0ea8abba497d10f64cfdd3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'game hacks' and 'generators', a common lure for malware distribution or phishing. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the nature of the lures suggests a potential for JavaScript execution or further payload delivery via the linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/robux-hack-generator-game-hack PDF link annotation
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/what-is-a-robux_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://milagrosjogja.com/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E9 24928 bytes
SHA-256: d70601fc0b78cbbc73e195b93358eb3f5ea4bc8e1c84711f29fa055e0e7cb143
font_01_sfnt_off000082c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C2 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C74 18352 bytes
SHA-256: f5433ce3dc9930d213a8e7315569ee207b9df6dd56817c97a1fb358bc14a6a3b

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