Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a53eae6ceb33ffb…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 16:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf7c5b5370f7802947c9443a0fb00c0f SHA-1: 00fac0b8ad52e10b3960558e637c76de58809ff3 SHA-256: 3a53eae6ceb33ffb5dda819cee5268bcc87f5e6c99c81c84ffaabfbea70d341f
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency, directing users to a known malicious redirector URL. The embedded content and heuristics indicate a phishing attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

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-get-free-robux-on-phone-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_off000033cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CD 28456 bytes
SHA-256: 4ebcaff11875f2e8a2bdc36379a446075b90160034c4b4715dfd04356268466d
font_01_sfnt_off000073e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E4 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off00008555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8555 18600 bytes
SHA-256: 4aaa4dd608c1f398ea3b3714e579938e54c8b6ebc42d5b365d603cdfd05c4e85

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