Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd51f49b179e1d4c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-16 07:33:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1a5750b91bd27017663d4a212886b674 SHA-1: c39429ccdd95ee7bae37fac30b42f3bc18df6b7f SHA-256: fd51f49b179e1d4cee813fc3ccd85c2347c8d4812ed7afd2b181feeaa77fb821
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains embedded links that redirect to a malicious URL, presented as a 'game hack' lure. The document body explicitly contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a social engineering attempt to trick the user into visiting the malicious site. The presence of multiple redirector links and the nature of the lure suggest a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-hack-and-get-free-robux-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_off00003493.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3493 27168 bytes
SHA-256: d9b261f0b57885781bea4e9819bedf0e2e16997cc582e13ac4b528b238f382e9
font_01_sfnt_off00007310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7310 3464 bytes
SHA-256: 8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20
font_02_sfnt_off00007f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F45 18856 bytes
SHA-256: d1af75e50eba08e00cb44d21026f4cdbf29920fa5250f1112d9d0eb56b6eb802

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