Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b5b0ee84960e777…

MALICIOUS

PDF

34.4 KB Created: 2021-05-21 21:09:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df1bf14935f87015c2f9ff7687e7cba8 SHA-1: 8b312ece681f7ee9fa12e2e3cdf4e9035eb0c7e3 SHA-256: 1b5b0ee84960e7777f36f30b1fc70a275cf6f9a9595dabc7c95153127270ecd2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising a 'Roblox Hack Site' or 'free generator'. The heuristics indicate that these links point to known malicious redirectors and are designed as a lure for users. The document body, though partially obfuscated, also contains references to these malicious URLs, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier clean score 0.1044

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/roblox-hack-site-game-hack In PDF document text
    • https://istanagloves.com/ckfinder/userfiles/files/how-do-you-get-free-robux-on-roblox_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
stream_002_off00002c1c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C1C 24700 bytes
SHA-256: 44d736a2d9892a1dd094b9ffbd3bf267e575e74ff255984d927d8c77b9efcf35
font_01_sfnt_off000064f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 18408 bytes
SHA-256: baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952

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