Malicious PDF — malware analysis report

Static analysis result for SHA-256 708f376679376cee…

MALICIOUS

PDF

49.9 KB Created: 2021-05-10 18:00:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5d2c5a9cac1adb759fb4fd40d02e3072 SHA-1: 1582deb32abb3897c7aaf4e022bbbf63c3d90185 SHA-256: 708f376679376cee1e3f17353c66f4927555f2cff7e0b4524ba75966a2420c89
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of "game hacks" and "free generators" to trick users into clicking embedded links. The primary link, https://netcdn.xyz/app/406889139/app-master-game-hack, is likely a redirector to malicious content. The document body contains obfuscated text and numerous URLs pointing to other potentially malicious PDF files, suggesting a downloader or redirector chain. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/app-master-game-hack PDF link annotation
    • https://mbbs.hr/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/robux-website_GM431946152.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004749.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4749 26036 bytes
SHA-256: a9b1885900ba4f140c629cf2f461f01f0721a41f9c4da3cda9e491d439f761a4
font_01_sfnt_off00008263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8263 3540 bytes
SHA-256: 8b71b2a1461e1b7ee863f900061a4634908a6a5cc47e90807da0a984c9246498
font_02_sfnt_off00008e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2E 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000a2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2B8 17460 bytes
SHA-256: 4464f59f323fc065d9701067f709c7b39ed9c448b1d3d372901e8849389ccaec

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