Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1daf848d452579…

MALICIOUS

PDF

29.0 KB Created: 2021-07-21 12:20:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8043ee9dded489ad78d93eb9286b2f0 SHA-1: 0544f33311e159c820f2242017aa0bbd166c5e16 SHA-256: ed1daf848d452579bb506cd31a051a21895c0ff0baecdb93a8c711b9ed99fb8e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a 'game hack' generator. The document body explicitly contains the URL and a call to action, indicating a phishing or scam attempt. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0570

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/431946152/how-to-get-free-robux-2021-game-hack In 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_off00001d2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D2F 21980 bytes
SHA-256: 8ed3ceb0807b87de98335111e8b580884b28b3defd3f39992785343bb60b2394
font_01_sfnt_off00004da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DA0 18868 bytes
SHA-256: a5d6d97ab978757aba4ef486352919807cfdbbfc3a04ca685304abf2b11b5df3

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