Malicious PDF — malware analysis report

Static analysis result for SHA-256 8278c0d0afdf9778…

MALICIOUS

PDF

36.7 KB Created: 2021-05-14 16:02:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8264d5384ef67ff11d9fefc2a61cf3aa SHA-1: c25f75c089ee10764a1d918126b7bba636f15ea2 SHA-256: 8278c0d0afdf9778777dc21585ae8caf769e21d2275ca55058b1cd3b33958858
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating it is a lure for game hacks and redirects users to a known malicious URL. The document body and embedded artifacts suggest a social engineering attempt to entice users with promises of in-game currency. The embedded URL is the primary indicator of malicious intent, likely serving as a gateway to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/robux-hack-free-robux-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003565.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3565 24668 bytes
SHA-256: 0b2a95c7cb40ef0ec09a539e5dd69f72ea9305f81f767d226c7fc6e5496fc9d9
font_01_sfnt_off00006dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 18412 bytes
SHA-256: e7ad190f023b5a59f82d5d2304e728b1fb84096fbbeb22520bbc212286f43b51

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