Malicious PDF — malware analysis report

Static analysis result for SHA-256 15086e6b7b4ae9e2…

MALICIOUS

PDF

33.4 KB Created: 2021-07-07 21:15:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5f2df495596a3244c4041e4d11be08c SHA-1: 5062bd210ee187bb16dad6443803b65f69c971c7 SHA-256: 15086e6b7b4ae9e2ccf4eeae17b5bb7ae6b6812cc7aec36ce3fd692bf29420c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link that redirects to a known malicious domain, disguised as a 'free generator / game hack'. This lure is reinforced by the document body content and multiple heuristic firings indicating malicious redirector links and a general ML classification of maliciousness. The primary goal appears to be directing the user to potentially harmful content or further malicious sites.

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/free-robux-script-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-gamepasses-on-roblox-by-inspecting_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/hack-dragon-ball-roblox_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-roblox-sweatshirt_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/minecraft-116-free_GM479516143.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/black-clover-online-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-100-works-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/hack-coin-master-no-survey_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_off00002cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEF 21808 bytes
SHA-256: a0ec8fc9fc14a3805a446f883a7fa2eade9901f2bd6e464c043f77c426164bc4
font_01_sfnt_off00005d34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D34 19116 bytes
SHA-256: b7ec675b0859f84f9d3687bec040beecaec8d80b831038dc5af6dc69bcb309d5

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