Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e808cc0298fff9a…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 11:15:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7efc38c5a0bf87d582603d881a609df9 SHA-1: f4a897b183138a4dedc3bc3f81ff00a6b85e7eca SHA-256: 4e808cc0298fff9a6178c6c61dd2bc31b4bb8d2519be9991d9afca13459d1dc7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free currency' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or phishing. No scripts were extracted, but the embedded URLs and redirector findings strongly suggest a malicious intent.

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-links-for-today-game-hack In PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-roblox-exploits-that-are-safe-vermillion_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/master-coin-free_GM406889139.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-robux-out-of-the-consule_GM431946152.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-can-i-hack-money-in-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mysadam.info/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/robux-free-gift-card-org-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_off00003268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3268 23272 bytes
SHA-256: 686f369cd6057004a46a63a414df25c9a6aea6257551340d5c306cdc17c76e72
font_01_sfnt_off00006711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6711 18524 bytes
SHA-256: 9e2b17a2888e17d335209aec35c43d796348b949677bc7770edd394e7e2bb40c

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