Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ee5e726f3bd58c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 23:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efff481ecb023d1dccc0f22663460430 SHA-1: 914f118dd0e87e507031c6977c517f46a78e7821 SHA-256: a8ee5e726f3bd58c7d1957cf780b63682dac7934406fee3e78113247636c46cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and free downloads. The ML classifier strongly flagged this PDF as malicious. The presence of a download button lure and the nature of the links suggest a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coin-master-apk-hack-game-hack In PDF document text
    • https://www.arquetopia.org/images/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/minecraft-for-free-apk_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/login-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/www-rbxhut-com_GM431946152.pdfIn PDF document text
    • https://www.arquetopia.org/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.arquetopia.org/images/coin-master-hack-pro-gamers_GM406889139.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_off000049a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A0 24356 bytes
SHA-256: f19fa97225ff9318837121a2c4865c2abccb8dd9577461d3fd06529998d55210
font_01_sfnt_off00008179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8179 17892 bytes
SHA-256: c20218c0ab10bf156f09886e8826d33298fcbe85625a719267aa59d24778aa2b