Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d0a39996770065…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 09:34:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71e385dca57d479726b22cdbba54462a SHA-1: c100c1e276e5d0ddb7fb81bad0c89c2b838792b1 SHA-256: 44d0a39996770065eac4d779f6c34a2fceded92b7ea9c8d7af822fafa423a758
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. The primary redirector URL, http://netcdn.tw/app/479516143/minecraft-hack-mod-game-hack, is flagged as malicious. The document body and embedded artifacts suggest a lure to download further content, likely a malicious payload, consistent with a phishing attachment.

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://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-codes-2021-november_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-roblox-hacks-jailbreak_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/roblox-cheating-youtube_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-free-coin-and-spin-app_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-tiktok-views_GM835599320.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/free-robux-guava-juice_GM431946152.pdfIn PDF document text
    • http://mtsn31jkt.com/__statics/gudangsoal/files/how-roblox-got-hacked_GM431946152.pdfIn PDF document text
    • https://mtsn31jkt.com/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot_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
font_00_sfnt_off0000317d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317D 22620 bytes
SHA-256: d218ae535a325ba684bb51f75cf3e6ffc1f870745196db98731b31489795e983
font_01_sfnt_off000063af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AF 18340 bytes
SHA-256: 49e8d41e4645ecbcf6c8cca7b2812b927382294641a04bb93a79b652b6b1cc7e

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