Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f610528d6dbcc4…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 10:37:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c14af00528bf1a1c1d16effc34e6bef2 SHA-1: d0d10938a7298ac35fa3b55f677aa2b035518663 SHA-256: b8f610528d6dbcc4c25288042c81201012f5aa28aa273addffcc639bc469a5d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as game hacks and free currency generators for Roblox. The primary redirector URL is http://netcdn.co/app/431946152/how-to-hack-a-computer-in-roblox-flee-the-facility-game-hack, which is likely used to deliver a second-stage payload or lead to a phishing site. The document body and heuristics confirm the lure is related to game exploits.

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-hack-a-computer-in-roblox-flee-the-facility-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hack-robux-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-bad-business-hack-speedrun_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-clothing-on-roblox-names_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-scripts-to-fly-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/nazi-roblox-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-robux-maker-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-robux-generator-2021-free-download-no-surveys_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/hack-roblox-money-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-shinobi-life-cheats_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-download-roblox-tshirt-guns_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-make-your-game-really-popular-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-execiter-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/robux-no-human-verification-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/sbh-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-apocalypse-rising-hack-tool_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_off000032e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E9 22216 bytes
SHA-256: 252a2331c48c2741622c915fbc1ed1eb046b06f40e29c80de52f93ba97e4794d
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 20128 bytes
SHA-256: 4a37cc08a219094c05fbf39ec3f2259d3a1fa82238d4019c23f8f73f8e6d0bca

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