Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ed8b5d6d1d76a7…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 12:04:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61a717ee4f731ff722a31e78c38fe00d SHA-1: e1d536df784dc0db26909b768a9d4b4e376d467c SHA-256: 20ed8b5d6d1d76a7f29f4a2cd7a2e6012a01169a35be61372aa0eef8b0683252
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'Free Robux' and a prominent call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. This link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document's structure and embedded links strongly suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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 https://netcdn.xyz/app/431946152/free-robux-group-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3135 30640 bytes
SHA-256: 27f0fd8185f95d194409db45da64887927cfc7d010ba5b27e1e7aa55712da36e
font_01_sfnt_off000073db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 7436 bytes
SHA-256: 67b1c45dc5bf3149e9f16649dd6a7062be812d9aa5195941c4c6caddedbdb68a
font_02_sfnt_off000085dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85DC 18192 bytes
SHA-256: 388213afa323ee085de7e38d37e80f389e12e91d2d5a1b35e5038c11a526558f

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