Malicious PDF — malware analysis report

Static analysis result for SHA-256 8037282897536557…

MALICIOUS

PDF

54.7 KB Created: 2021-06-03 11:46:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32c4c2fac6de6de3d75c75e95dc6b172 SHA-1: 6506e3bd7d0e531de0a89120c568f5863c09e8e6 SHA-256: 803728289753655706760946f08b05c642ac9c2d429c5839ad503a7d1892b67c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to entice users. It contains multiple links, including a primary malicious redirector at 'https://netcdn.online/app/431946152/free-robux-codes-2021-game-hack', which likely leads to further malicious content or downloads. The document's structure and embedded URLs strongly suggest it is part of a phishing or scam campaign designed to compromise users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9649

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/free-robux-codes-2021-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-hacker-us_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000538b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x538B 36988 bytes
SHA-256: ac0084a66f6321a1ff7686c14bc55fa2f9b926ef2499af4510bbd1b23b14dfb8
font_01_sfnt_off0000a611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA611 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off0000b2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2B8 18588 bytes
SHA-256: 0c0011b59677f21f59199ad7d2a82948105ed154610022cedcbab6f052c91d55

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