Malicious PDF — malware analysis report

Static analysis result for SHA-256 da6f653fa2932d98…

MALICIOUS

PDF

36.1 KB Created: 2021-05-20 16:29:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b8c952c427410971c6347272dfbfc71 SHA-1: bae3be9aadc6b38045ce50b9b6fcc8db56b59324 SHA-256: da6f653fa2932d98b851f41310d528ac4e6a8df82713ba76e161f921c301a720
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free Robux' or game hacks. The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-codes-game-hack In PDF document text
    • http://getthelook-bkk.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://getthelook-bkk.com/images/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://getthelook-bkk.com/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://getthelook-bkk.com/images/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • http://getthelook-bkk.com/images/roblox-2021_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_off0000325f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325F 25400 bytes
SHA-256: 2d8e50fb32348090e6f189ad260550da18f85d45b0eabd66fe516fbb383bc10c
font_01_sfnt_off00006c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2E 18188 bytes
SHA-256: 7763b0eba74f003993d6ddc379ef756dfeeff7cedd1b34d70c41f8674d393ab3

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