Malicious PDF — malware analysis report

Static analysis result for SHA-256 449ec361dbd7b9f7…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 01:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dbf66851739db284f83e3af6864648e9 SHA-1: 57d47e6bcdbfc5f2db6cb72636ba92052e814e72 SHA-256: 449ec361dbd7b9f7b28a34a3a7d694d8fb3f655217a33c96ef8ae1a1df7dc3eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generators' and 'game hacks'. The document body and embedded URLs suggest a social engineering lure to trick users into visiting these sites, likely to download further malware or engage in scams. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.xyz/app/406889139/lucky-patcher-coin-master-hack-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/game-toolbox_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-by-watching-ads_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
stream_003_off00004cd7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD7 25468 bytes
SHA-256: 98c9317face588542b0a6c2f3983383cf60c307e011c151dbdaceb75723eab16
font_01_sfnt_off000087e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E3 18356 bytes
SHA-256: 8ec65d0f5dc2d155408c54e8fca99d6e5dff9ed808b7c9158d2ba030e67357e0

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