Malicious PDF — malware analysis report

Static analysis result for SHA-256 104febdeb8945fd6…

MALICIOUS

PDF

34.1 KB Created: 2021-07-08 07:44:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cc489d39c4ee822c168221daf25d3b94 SHA-1: 38efe33b26efa79421d9c87beb7a5d899affb644 SHA-256: 104febdeb8945fd623e3d272cd684e7840fa599081dda45081184e7e21522bca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links that lead to a known malicious redirector infrastructure, specifically advertising 'game hacks' and 'generators'. The presence of multiple related URLs and the ML classifier's high confidence score indicate a deliberate attempt to lure users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

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/479516143/minecraft-hack-mod-game-hack In PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/y8-roblox-free-game_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/identity-fraud-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-airport-free-game_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-clothes-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/hacking-roblox-through-cookies_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-hack-client-we-are-devs_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-free-draw-bot_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-hack-accoutns-on-roblox-october-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning.mtsn1klaten.sch.id/__statics/gudangsoal/files/roblox-free-robux-raffle_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_off00003275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3275 21868 bytes
SHA-256: 5f13612a834410609742b9d217c7e25ecc21dfb6d70ed0f12d83cf6ca4fc0f18
font_01_sfnt_off00006294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6294 18340 bytes
SHA-256: 49e8d41e4645ecbcf6c8cca7b2812b927382294641a04bb93a79b652b6b1cc7e

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