Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19b35c45eb500d1…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 19:40:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4d7f2c875b333220e929452c222fe736 SHA-1: 7c23f145bab87263c056eba6992e1a10f4a8b400 SHA-256: e19b35c45eb500d15a064faf1df0af401d095f61d6c1b89a63a4331d8fa2a615
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary link, http://netcdn.co/app/431946152/how-to-make-vip-servers-for-free-in-roblox-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to drive users to potentially harmful content.

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/how-to-make-vip-servers-for-free-in-roblox-game-hack In PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-create-clan-in-roblox-for-free-account_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-clotrhes-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/controls-for-free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/como-hackear-robux-100-real_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-get-free-stuff-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-jailbreak-cheats-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-patched-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/basic-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/only-you-little-mix-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-jailbreak-auto-rob-hack-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/roblox-hack-booga-booga_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/get-robux-free-for-reel-no-get-someting-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkotajayapura.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-with-brutus_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3217 21680 bytes
SHA-256: e078c3fd4a7fbb4db5ac1e0afe6b2853936ec709d95cef1b6fdba20e41e4be27
font_01_sfnt_off000061d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 19724 bytes
SHA-256: e9c7ee991411182dd19480aa72c6283e191260ec17ba202fed61ece542d02d4b

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