Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddca08ae03fccfba…

MALICIOUS

PDF

31.7 KB Created: 2021-07-19 08:10:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6456102aea18a74b0db18143cd41da3 SHA-1: 98838f82310961846e84948d390a16387f847b74 SHA-256: ddca08ae03fccfba9840279bc81dfbf9695b58ce1b55ebdd02b2773957de5c17
160 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free Minecraft generators' and 'game hacks' to lure users. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at redirecting users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9439

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/is-minecraft-free-game-hack In PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/minecraft-dungeons-free-download_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_off0000290c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x290C 23316 bytes
SHA-256: e10af7a032fbac712d288dce41df0003785dc590c13257c33d27c5ee6d640324
font_01_sfnt_off00005cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBA 17568 bytes
SHA-256: 44c16732000c578f47393ad484896351af84166fbd5efffd5af9fb6697599acb

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