Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd2dfb40c20cf66…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 03:57:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70dfcc8a572abc542e3db28eb0dae522 SHA-1: d9191b19536cb95659c7f341b88d0da258bcfd39 SHA-256: cfd2dfb40c20cf66e6bdb74b423ca4a9faa705f99d19f6266a4958d560525440
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators for free in-game currency and hacks. The primary lure is the URL http://netcdn.co/app/431946152/how-to-get-free-coins-on-meep-city-roblox-2021-game-hack, which is flagged as a malicious redirector. The document's structure and content strongly suggest a phishing or scam attempt, likely intended to lead users to malicious sites or download further malware.

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-get-free-coins-on-meep-city-roblox-2021-game-hack In PDF document text
    • http://perpustakaan.ipts.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-and-builders-club-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-new-logo_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-hacked-client-download-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-gamepass-all-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-backpack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-robux-2021-january-not-fake_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-how-to-get-free-robux-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-using-free-models_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-gte-free-robux-2021-still-work_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-make-cheat-engine-undetectable-by-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/cheat-engine-trainers-for-roblox-list_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-phantom-forces-hack-level_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_off00002f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7F 22368 bytes
SHA-256: f228def02b84e2703668c9696a4f577a1e3f0f5c47e820e2fbdb888d352f2727
font_01_sfnt_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 19992 bytes
SHA-256: ded8596925c4ac95b853eea9f1632aa8ef2a45b632dfd91d638b6bc071e3a89b

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