Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67078b171f4ef86…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 13:51:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 928db14fb3becd7665f65af19ec1c89b SHA-1: f376eda000d14274200a817f4beaf89efa76b8bf SHA-256: c67078b171f4ef863b11edf25024b47a5cf1491f0b884c782ecc1802394e3ebd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-get-free-robux-jefftec-game-hack. The document's content and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into downloading potentially harmful files.

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-get-free-robux-jefftec-game-hack In PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-grab-points_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/como-hackear-roblox-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-phantom-forces-noclip-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-new-monstersimulator-hack-script_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-no-survery_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/clothes-that-are-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hack-booga-booga-download_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-script-exacutor_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/broken-bones-4-hack-roblox_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_off000031cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CC 22272 bytes
SHA-256: 89b08249459a820172540cb671cf7869022ab95e149323d3e8169127a1762031
font_01_sfnt_off000062f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F9 19148 bytes
SHA-256: beff28c6fd8de316504415317bf92564c481bc0863f7dfd72915f5e916ea3ccd

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