Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fcf72b7c7028d42…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 10:41:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9a205bf5e3f3de068105e2fec28893ea SHA-1: dfabdc0183896438be7d2c53b6621d9fa0f44c3c SHA-256: 7fcf72b7c7028d4218c0b5e065dfcf059b7e1d771ca62b0f8acd369441675008
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which links to a known malicious redirector. The document body explicitly mentions "How To Get Free Robux Without Verification Or Surveys" and "CLICK HERE TO ACCESS ROBLOX GENERATOR", reinforcing the social engineering aspect. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0739

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-without-verification-or-surveys-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
stream_002_off00002d2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D2D 27756 bytes
SHA-256: 3c7e53c85dd633086f0ef8af0651614eea496a29cbf1f24759359da67216c9e4
font_01_sfnt_off00006c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 19424 bytes
SHA-256: 30551668946d9b3d80fdd5a427c07e5f2c52faec585ae3c44dbbbd4d67cc7463