Malicious PDF — malware analysis report

Static analysis result for SHA-256 94638a5ca56a5525…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 03:51:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2be560104cb2f165908196c518709d4f SHA-1: d3899cfb0f399ec3c7ddf614e00c2df3e0c3a4b1 SHA-256: 94638a5ca56a552524e01b14e672678263ef79b42b524754379a804694548f38
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL identified is http://netcdn.tw/app/431946152/robux-free-gift-card-org-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious 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.tw/app/431946152/robux-free-gift-card-org-hack-game-hack In PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/6how-to-get-free-roblox-pc_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/yt-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/pokemon-go-free-codes-october-2021_GM1094591345.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/roblox-girl-shirts-free_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-free-chest-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://ebook.itn.ac.id/repository/coin-master-level-4_GM406889139.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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22220 bytes
SHA-256: cd4be282b77d1419583a3055a43c4951255f3a99cdf91ddceda07681f6d5e6c1
font_01_sfnt_off00006119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6119 19284 bytes
SHA-256: f1156f7356268fb459af4e8b8e1a15365edbfdc259dc3c2b8efbc825fbef6ec1

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