Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b2596e93ca55ee…

MALICIOUS

PDF

34.5 KB Created: 2021-07-02 04:04:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8bd1fce5e116cde143a160ea995424dc SHA-1: aa8a5c7a0d240f918648e89701442fd061a9f435 SHA-256: 82b2596e93ca55eef6b8879f8f9c16d658dac20ab95c156dec082970fd3053f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/robux-hacks-not-patched-2021-game-hack. The document body and heuristics indicate a lure for game-related cheats or hacks, likely intended to trick users into downloading malware. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing attempt to deliver a second-stage payload.

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/robux-hacks-not-patched-2021-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7//repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/youtube-roblox-how-get-free-animation_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-2021-december_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-paintball-cheat-codes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-free-robux-scam_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-hacking-how-to-use-require-scripts_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/comment-hacker-vehicule-simulator-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-robux-computer-generator_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_off00002df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF6 22356 bytes
SHA-256: 4bd2aa73ed096db5a8c0a9c2d8b8a08bb2d15ecf79998e13112796dff7032c8d
font_01_sfnt_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 19720 bytes
SHA-256: 601a0da34fefbb25e5e697c489c66a086e05bd08875c3532aaa7564e461ca65e

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