Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7dcd2d549f8a92…

MALICIOUS

PDF

31.6 KB Created: 2021-05-12 09:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bb31ef1409f00c443e9442bbd3f217fb SHA-1: 0da2f0767ed7b28179433934cebb7cc4719f5bb1 SHA-256: 3f7dcd2d549f8a92cd684978d06da8e9a289bd983ab593aae543ce7edcecbd15
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising a 'free Robux game hack'. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. While no scripts were extracted, the presence of malicious links and the lure suggest an attempt to redirect the user to a site that likely hosts a malicious payload or initiates a further download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0621

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-do-we-get-free-robux-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
font_00_sfnt_off000020cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20CD 25300 bytes
SHA-256: fea5a460f1c17242415a4ac3ed78c00efb61bd495fb9c8fbd4aec60609584db5
font_01_sfnt_off00005b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5E 17880 bytes
SHA-256: 6352e107aa6fadc561da91c3588356ce728fbd5c7a4866ed31e51b2c715660ac

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