Malicious PDF — malware analysis report

Static analysis result for SHA-256 eadb41a9eb732a90…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 06:13:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3875b1bf45a57d87434c3e071d8ca565 SHA-1: 03bba8509e46fc2a323c5f2dcc9476b9041b0054 SHA-256: eadb41a9eb732a90490d91261f3e5c3b0d8f4ccd1efb71b8a61637e4aa195a87
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and cheats. The primary lure, 'mcmaster-club-coin-master-hack-game-hack', redirects to further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a workflow designed to exploit user interest in free game items, likely leading to further malware downloads or phishing.

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/406889139/mcmaster-club-coin-master-hack-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-get-free-minigun-in-roblox-human-vs-zombies_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/application-pour-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/daily-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/pubg-700-site_GM1330123889.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/book-on-how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/sgt-wilk-robux-hack_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_off000031df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DF 23072 bytes
SHA-256: 4ed06e99a657f84e5277968bf7031bdb8daa6cb1e284beb165b28365d8ea2cb1
font_01_sfnt_off000065b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 18636 bytes
SHA-256: 3ff0f4f75a0a90b9327d70ca0f6ece0c1b2cc0f38d50ceb21f3733858aa42cbb

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