Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab88d8cbd18a13c…

MALICIOUS

PDF

36.8 KB Created: 2021-05-10 17:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: be559c83f6f41cd458235ff568c44fcb SHA-1: 4ea3674e7edf87ef9b864d0b22022598fa7e1ecb SHA-256: eab88d8cbd18a13c87d7e14fd74018c88df5f9a19b32321204eb0595ee09989e
150 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a lure for a "free generator / game hack" and links to known malicious redirector infrastructure. The document body also contains explicit calls to action for accessing a "ROBLOX GENERATOR". While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier clean score 0.0313

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/free-robux-real-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_off000032e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E4 25460 bytes
SHA-256: 313f7dd588f97383b3170c7e8be747676180ffbd67d9c5aa3debf62c5b8b94f3
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 18316 bytes
SHA-256: 0bff543ee19f4ca1641aaad3399cdc0a52c610caf2abd08cd8655404047fbeff

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