Malicious PDF — malware analysis report

Static analysis result for SHA-256 0724384148dfa489…

MALICIOUS

PDF

44.2 KB Created: 2021-05-16 20:05:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fd342cf05befa3188355dc12e88ffac4 SHA-1: 081af47fa533ac13e71be350967faa79d564398f SHA-256: 0724384148dfa489658bfa6955c61a8b62bb7bb2e8042859bdd73d17053737df
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for linking to a known malicious redirector, specifically advertising a "free generator / game hack" for Roblox. The document body, though heavily obfuscated, contains a URL matching the malicious redirector. This indicates a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/431946152/roblox-army-free-robux-game-hack In PDF document text
    • http://wolfzscriptsIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-today_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.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
font_00_sfnt_off00004a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A76 24380 bytes
SHA-256: d1830b040e71c800d913aecd64c9ad61a82ba657cc994f4265fdb8640bc4498c
font_01_sfnt_off00007fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8995 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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