Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0871da5f427befe…

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 00:33:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9245451d634051893b86036e87e38991 SHA-1: 85bdc9fad18031d157618abaec6e83b7ac8a3b53 SHA-256: a0871da5f427befe589b2e353a6ebfd332eb5e83a3604157a4d280f7e119e9ff
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure users with promises of game hacks and free items for popular games like Roblox and Minecraft. The primary link, https://netcdn.xyz/app/431946152/roblox-free-wings-game-hack, is identified as a redirector, suggesting it leads to a malicious site or payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/roblox-free-wings-game-hack PDF link annotation
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://xn----7sbabhw4a8b0addm1c.xn--p1ai/images/coin-master-daily-free-spins-link-2021_GM406889139.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_off00004736.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4736 24356 bytes
SHA-256: 9693ba326bf6ce67818c09e166335fd17014dd9f391c618b376c2c1462682bf3
font_01_sfnt_off00007ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF8 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000088a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88A7 18556 bytes
SHA-256: 0c6b1e6d5af6e71a5f717763afec74d9fa5a47fcdd63102494205ccdca690211

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