Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6bdfbea9e5f735…

MALICIOUS

PDF

35.3 KB Created: 2021-05-11 02:39:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b4c40b64b4241aa1e4d77372ce213d7 SHA-1: 77ee22bebe850eb55e81231ac0b0efc7194dd258 SHA-256: 2f6bdfbea9e5f735c9988cd17a929b989aa8b3864be3504d762ba0db5fedeae5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple critical heuristic firings indicating it links to known malicious redirector infrastructure, specifically promoting a 'free generator / game hack' for Robux. The document body and embedded links reinforce this lure, directing users to the URL https://netcdn.xyz/app/431946152/earn-free-robux-on-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest a common phishing or scamming tactic.

Machine Learning

  • Nyx PDF Classifier clean score 0.0306

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/earn-free-robux-on-roblox-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_003_off0000316a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x316A 24376 bytes
SHA-256: 9097929cb0e41c4558ec318ac7cea8c19fd5bc500a7f63d974095d747d74baee
font_01_sfnt_off00006888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6888 18316 bytes
SHA-256: 9c0981cacc72906997edc94ef8681ff328413c242d975763da1b98cbde4aeec5

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