Malicious PDF — malware analysis report

Static analysis result for SHA-256 524df5f2950c4821…

MALICIOUS

PDF

31.2 KB Created: 2021-07-19 00:40:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0b71ae780ad0e76b96cf24d2100cddb6 SHA-1: 5d1438ed49e79311ef0d3b969a7f5068a34517e8 SHA-256: 524df5f2950c482185d61949b83bf9c7219d185adc71ef1166d2ea3771cb95ca
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, disguised as game hacks and generators. The document body also contains a call-to-action phrase, reinforcing the lure. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9404

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/free-modded-minecraft-server-hosting-game-hack In PDF document text
    • http://suryaartajaya.co.id/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://suryaartajaya.co.id/images/how-to-host-a-minecraft-server-for-free_GM479516143.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_off00002689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2689 22428 bytes
SHA-256: 30ecdab0b6f915fa61fc07f2d111ef15664689f80f39be084ae44eb94a5fbd82
font_01_sfnt_off00005849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5849 18284 bytes
SHA-256: 4ae19380f71872a59bca81a6826a2f1ac99dae3e110f9987d961b4518a9677d8

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