Malicious PDF — malware analysis report

Static analysis result for SHA-256 441d56c50f4a4326…

MALICIOUS

PDF

33.2 KB Created: 2021-07-02 06:06:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e2b3ff897607e1517701ee68dec39d74 SHA-1: a655c0dd068819e13d6601a48b15f59c2f4920b3 SHA-256: 441d56c50f4a432635f07988b370c6fea55f8058aaf0913d01cf05d14e1a773c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free currency. The primary redirector URL is http://netcdn.co/app/431946152/bloxburg-hack-roblox-game-hack, which likely leads to further malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful sites.

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/bloxburg-hack-roblox-game-hack In PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/vido-roblox-ninja-legends-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-sex_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-cape-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/hacking-codes-for-roblox-ban-admin_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-hack-strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-codes-and-obc_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-my-hero-academia-online-quirk-hack_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-images_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/donde-entrar-para-ser-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-pfp_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-get-free-roblox-money-easy_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-roblox-fe-scripts-pastebin-july-2021_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/free-robux-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/roblox-promocodes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stipjakarta.ac.id/etd/repository/how-to-hack-a-roblox-game-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CCA 21908 bytes
SHA-256: da30f710a1e902318d7590d9a9c09e99854914cc797583a9596980305cf2ee9f
font_01_sfnt_off00005d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D49 18796 bytes
SHA-256: bb06b7b5827bb4da05a206154301556b0ae26db02ba259d4459cf100a15fded1

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