Malicious PDF — malware analysis report

Static analysis result for SHA-256 244d48390663558f…

MALICIOUS

PDF

44.3 KB Created: 2021-05-19 13:50:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2f88c3eeedd9ce960b77ed343d6be463 SHA-1: 65b1cd6eacf1824ca8a617bf706ebfc76f4b4673 SHA-256: 244d48390663558f8ef4982b9a80315474e44b38ac06c426788d26d80484baa0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users interested in 'Coin Master'. The document body and embedded URLs reinforce this lure, pointing to sites offering generators and hacks. While no scripts were directly extracted, the PDF structure and linked URLs suggest an attempt to redirect users to malicious content or phishing pages.

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/406889139/coin-master-link-today-game-hack PDF link annotation
    • http://ambingenieria.com/images/minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/free-generator_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://ambingenieria.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A33 24500 bytes
SHA-256: 3f4291b0ce3ab1401703186ceeb5eb2edf39d7b95adff776e0570ed50d3db079
font_01_sfnt_off0000816a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x816A 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1C 18072 bytes
SHA-256: 9ba18410547103ebf9977f1e8d0e3c845630f063c7b47a9dc3698bca19a27760

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