Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae2586724ff83a9…

MALICIOUS

PDF

47.9 KB Created: 2021-06-04 01:07:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1628af20a2cd813643a772e2652e7f46 SHA-1: 4d9d2bfa74f27d19ab668a2a78e735a285af2240 SHA-256: 3ae2586724ff83a9ee0046541d42ac96293e4ba3e51ed73b622c5c34015037bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "game hacks" or "free generators". The primary lure URL is https://netcdn.online/app/431946152/how-to-get-robux-on-roblox-game-hack. While no scripts were extracted, the embedded links and heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/431946152/how-to-get-robux-on-roblox-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/moon-active_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-app_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ffb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FFB 27052 bytes
SHA-256: 8733e21171ba26d147b82c0bd5e8a3c1f931a82900b3d9214d06b6c00f321d00
font_01_sfnt_off00008bfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFC 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off000098a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A3 18192 bytes
SHA-256: 6f80236451fc1e14c638224e970cc30e723993c5fccbf8a9b83dbf32d3a654d7