Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70d78aeaef8b36b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 13:31:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fe2c1f1fde40391c6076895e83d16dc SHA-1: 221bb51aa168e7ea5e34992e2a22771d4d9243ee SHA-256: d70d78aeaef8b36b51c97787dd77992d49ac793006bbdaab1c465ef4b00de19c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free in-game currency. The document body and heuristics confirm the presence of lures for game generators and malicious redirectors, indicating a phishing or scam attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/coin-master-free-spins-link-2021-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/roblox-best-hack-for-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/site-robux-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/bloxawards-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-vip-server-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-com-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-download-free-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-hack-not-patched_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-invitations-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-engine-67-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-private-server-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/one-app-rewards-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-unlimited-spin-link_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_off0000309d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309D 22788 bytes
SHA-256: 258498e096d43e3554383df16114b44d0ae974e2ba2ed508e08943799f7ff8e7
font_01_sfnt_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 18748 bytes
SHA-256: 785b8830476a1dba2603225cf55ebb3d3433825858fb25e5612ad86a59b30773

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