Malicious PDF — malware analysis report

Static analysis result for SHA-256 d158ed520d3e7b62…

MALICIOUS

PDF

46.9 KB Created: 2021-05-17 14:31:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 27311637f8bbf7285c11e88bd5b447b2 SHA-1: 9c8a74eb4ac41e155c05d3660a5c8bcc80f64e3b SHA-256: d158ed520d3e7b622af1eb5a57cc57078a1a73f969652b06da6dfb87c54bec11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to websites offering game hacks and generators, such as 'minecraft-free-ios-no-verification-game-hack'. The presence of these lures, combined with a high-confidence ML classifier and heuristic firings indicating a malicious PDF and a game hack redirect lure, strongly suggests a social engineering attack. The document's primary purpose appears to be directing users to potentially malicious external sites, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8729

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-ios-no-verification-game-hack PDF link annotation
    • http://inextpresident.com/images/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/minecraft-windows-10-edition-hacks_GM479516143.pdfIn PDF document text
    • http://inextpresident.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B46 24512 bytes
SHA-256: 93f63664cd0f488434e239b29ff3ebfc70e76f355c99c26d28f5df47e5835284
font_01_sfnt_off0000819b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819B 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00008bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEF 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off000095ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95FF 17844 bytes
SHA-256: 314c8825a4d06e03bd849bd4cad10bf883abec19d637afa4c41587c94f1a0a3d

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