Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbfc073bc1cb6098…

MALICIOUS

PDF

40.2 KB Created: 2021-05-22 16:13:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e8a9340af3777ac44308c59a0921341 SHA-1: 26a4a641e6fff14521ff139266100604cd961dc9 SHA-256: bbfc073bc1cb60988bbe35e6aa9d58fd95ea21ee1414ac6c904cb4499f0bb5f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links disguised as download buttons or generators for in-game currency, specifically targeting users interested in 'Robux' and 'game hacks'. The primary link, 'https://netcdn.xyz/app/431946152/how-to-get-free-robux-no-scam-game-hack', is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a lure designed to redirect users to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/how-to-get-free-robux-no-scam-game-hack In PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://eyeonhimalaya.com/userfiles/files/free-spins-coin-master-no-human-verification_GM406889139.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_off000030d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30D1 31804 bytes
SHA-256: c1e9770a293724983c08a856021a89b86244d6126e84e648ed447a6d0e062f58
font_01_sfnt_off00007aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 18768 bytes
SHA-256: d1f42346170e568709c452458a32d8325f9466b63e26828f6615071549d089d8

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