Malicious PDF — malware analysis report

Static analysis result for SHA-256 8515146b02f7cb59…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 03:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9d18c0ec025e1c2580437432c09519be SHA-1: cff5d3ee44d476c4c5951bc6a1e2374960436993 SHA-256: 8515146b02f7cb599c87d04de908dbe197bfe2883f5887cf31c9e3bc50b026fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising game hacks and currency. One of the primary links, http://netcdn.tw/app/431946152/how-to-hack-in-arsenal-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest it is part of a phishing campaign aiming to redirect users to potentially harmful websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/431946152/how-to-hack-in-arsenal-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-cheat-cra-crusher_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-codes-toys-free_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-mobile-360-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/promo-code-hack-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/0-0-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/hack-download-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-get-free-robux-denisdaily_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-noob-hat-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-no-human-verification-and-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-to-hack-roblox-game-mad-city-with-check-chased_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
font_00_sfnt_off00002e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E76 22072 bytes
SHA-256: c75926a61310438736665a737ff7da552d4d3d9fd1f0e4cfe6dfcbe05478d273
font_01_sfnt_off00005f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F67 18452 bytes
SHA-256: e830d4d2850352ff681c802b50bfdb69e36cdf0dd9a2fca6f972fc848603048f

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