Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3f892304b2584e…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 21:02:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5d870cb991ef0742b2a041296c11c74a SHA-1: b9167f180ac4abb571ee334b2b8a3402f9e9b364 SHA-256: 4c3f892304b2584ea665ecee401f3c0fd78346f420fa971e821c8cdb4dcb62b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains lures for free game items and accounts, directly linking to malicious redirector infrastructure. The document body and heuristics indicate a redirection workflow designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/free-roblox-accounts-with-obc-lifetime-2021-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/pastebin-hack-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/da-hood-roblox-free-copy_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/tiktok-ui-kit-free_GM835599320.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-to-get-unlimited_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-clothing-apps-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-redeem-a-free-code-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/adidas-tracksuit-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/slerp-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-hack-script-python_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-any-roblox-game-using-javascript_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-dev-to-hire_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-anti-cheat-bypass-script_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000302e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302E 22160 bytes
SHA-256: 1b0a033a57148de5627f7c57fec35a4cd48540ea002da16af93ca81cb66ea2d2
font_01_sfnt_off00006124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6124 20040 bytes
SHA-256: c492104789c9b167dbf81547df74dfe1ff903a79b5a4a8f64a7fad910f9c7b1b

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