Malicious PDF — malware analysis report

Static analysis result for SHA-256 044d8ca369045bd0…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 18:53:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8839943613e92c9e5069380443e138c3 SHA-1: c691c87064c7acdaf6ced134e93980603bf001b9 SHA-256: 044d8ca369045bd0a0b707761bec3c42a0f8c3ebc6e4c151234a65a5a2db500a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a free game hack generator for Minecraft. It contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/minecraft-free-game-hack. The document body and embedded URLs indicate a campaign distributing further malicious PDFs, likely for credential harvesting or malware delivery. No scripts were extracted, but the presence of malicious redirectors and the lure suggest a phishing or social engineering attack.

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/479516143/minecraft-free-game-hack In PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-pasteur-brie_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/cuenta-de-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-raindrop-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/earn-robux-today-free-wall_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-generator-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/google-play-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/roblox-hack-generator-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/hack-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-hacks-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-roblox-money-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/robux-verification-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/hack-roblox-volar_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/esp-xray-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-jember.go.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F80 22644 bytes
SHA-256: 9f1baf5388f262427d027fe0d223dff001320f3e169eba35cad25e079ae906b0
font_01_sfnt_off00006179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6179 17856 bytes
SHA-256: cc1e3add4a04a98446b1b55314af2162444863ccaf169a3449495116b9daf471

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