Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d5ae29f6f5a83f…

MALICIOUS

PDF

33.7 KB Created: 2021-06-28 09:53:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: aaed5c929d20a033d9e1e71de0989cfc SHA-1: bbefcc16254efc6e0bed509598498a7855222df3 SHA-256: 36d5ae29f6f5a83f2ed8fd3e34e817c206635a938886fada532f72170ee44b72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure to download or access cheats for games like Roblox. While no scripts were explicitly extracted, the nature of the links and the 'ML_NYX_PDF_MALICIOUS' heuristic suggest a high likelihood of malicious intent, possibly involving further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/cheat-avatar-roblox-game-hack In PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-bots_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/tiktok-free-boost_GM835599320.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-visual-cheats-script_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-robux-khaos_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-roblox-robux-free-pastebin-com-https-pastebin-com-qqcutpsq_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-upgrade-for-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-ios-gods-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E99 21908 bytes
SHA-256: fbe18d86bcb75c6967dfa05a6bceb6159da4191afa3f71df95816ccdc0cdf1f8
font_01_sfnt_off00005ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF1 18872 bytes
SHA-256: aa6ee5b94d49af4a2a142a703749e777546374ab31cf8ef194497732f604321a

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