Malicious PDF — malware analysis report

Static analysis result for SHA-256 38654e51951baabe…

MALICIOUS

PDF

46.4 KB Created: 2021-05-14 03:32:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 39bada8e6d0ce411af9286c2a88345ae SHA-1: 87cd871c5599785cffa6411a541340bbb13e2890 SHA-256: 38654e51951baabe3408f3e9470d0dee513c7b3b2b9664e472876b29b5a2e6b0
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The embedded URL `https://netcdn.xyz/app/431946152/how-to-get-free-robux-easy-2021-game-hack` is identified as a malicious redirector. The document also contains a visual download button lure, reinforcing the deceptive nature of the content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0135

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-easy-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003927.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3927 27124 bytes
SHA-256: 686cbdb9c5d51c42a238cb193c67b3c39f12890811d918d579a5b6798babf451
font_01_sfnt_off00007905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7905 7468 bytes
SHA-256: 2f023798e90d9aa081e6375923b9001d300a7ea394ebfff24c52c62fd6d44aa4
font_02_sfnt_off000091a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A9 19092 bytes
SHA-256: b4f5bd8c8985fe06cb8cafea7c6a35db41ab3230d9b691422e9309a9df735677

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