Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e82997dfb41751f…

MALICIOUS

PDF

37.4 KB Created: 2021-07-05 09:07:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 43c4a4faa9e216a7cf625df3f156d3d7 SHA-1: af23dd75c90bcd0f8884d05d804d062e5dba2914 SHA-256: 3e82997dfb41751f12b38180a4f7263986c6697eee36f7682d70c12cf58d3103
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 malicious URL identified is http://netcdn.tw/app/431946152/how-to-get-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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.tw/app/431946152/how-to-get-robux-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/roblox-wizard-tycoon-2-player-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pokemon-go-free-money_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-points_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-how-to-get-paid-games-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/working-at-a-pizza-place-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/pokemon-go-free-balls_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-descargar-roblox-gratis-y-hackeado_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-game-download-pc-free_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE2 22816 bytes
SHA-256: d85c49890c85e25ed1c6708f2bcbc3f35c7cd8810a7033f8d8cb12db3639b447
font_01_sfnt_off00006de3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 18820 bytes
SHA-256: a2dfb2a65560055ec751139d067554c48d03732db01303c3495e5b92c6b8973a

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