Malicious PDF — malware analysis report

Static analysis result for SHA-256 06fc8b02038a9aa9…

MALICIOUS

PDF

48.2 KB Created: 2021-06-13 20:17:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 933109ad92a9e8b4f2d5040ce5599b3c SHA-1: 77f00514d2a8e7deaf6cd7f45ab8fde9e6ca880c SHA-256: 06fc8b02038a9aa9975114c4fe8cf9aafddab0b724340b16f8c3be8def13e1b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual download button lure, suggesting it is designed to trick users into downloading potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple URLs related to game hacks indicates a likely phishing or scam attempt. No scripts were extracted from this sample, but the overall structure and content point towards a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/free-robux-hack-2021-with-no-oprewards-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/youtub-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/gratuit-et-sans-code-hack-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-cp_GM431946152.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_003_off00004d03.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D03 25948 bytes
SHA-256: 3e1c68d9e190f32acedf470ac1091df0245c5f12f7850df76508881f9f9ae031
font_01_sfnt_off000088d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9285 20740 bytes
SHA-256: 16daee11b1359927816a40d0ec738526bee5c704fe63d8533f9824c0275c63ca

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