Malicious PDF — malware analysis report

Static analysis result for SHA-256 7835e6f2d18bd38b…

MALICIOUS

PDF

40.5 KB Created: 2021-05-15 02:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 064a0b2e0bcd5a946c1a4c2b3d35a4ad SHA-1: 3fabf002ccf2efe355ba4b5e951fb1f298c94d72 SHA-256: 7835e6f2d18bd38bfca3a1b805023ff2a6550c46aa5f21dbd013c24c3c9f2744
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as a "free Robux generator". The document body explicitly mentions "Free Robux Generator Com Roblox Hack" and "CLICK HERE TO ACCESS ROBLOX GENERATOR", indicating a social engineering lure. The heuristic firings confirm the presence of malicious redirector links and a lure for a game hack. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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-generator-com-roblox-hack-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
stream_003_off0000336c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336C 25652 bytes
SHA-256: 1994f021a2d6d40c9911c690b12c49a4569f3b2590dd8d3d68448c008623382c
font_01_sfnt_off00006e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007b60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B60 18852 bytes
SHA-256: 4f913a2277500713712aa6cd09c4e12b5f8093088fb24eab89a43b1b22929045

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