Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfe754e31924782c…

MALICIOUS

PDF

36.9 KB Created: 2021-05-11 20:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1b76da62de0cd91ce4937920846c73e8 SHA-1: 199d592367bf89bc96dd50cb173dead7ecd4ed80 SHA-256: dfe754e31924782c894ac8cac453098c11d5d8e4a80752a1b05e2ce609ee2c52
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a "Roblox Hack Generator" and embeds a link to known malicious redirector infrastructure. The document body explicitly mentions "Roblox Hack Generator" and "CLICK HERE TO ACCESS ROBLOX GENERATOR", reinforcing the phishing pretext. The embedded URL is associated with malicious redirector activity, indicating a likely attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/roblox-hack-generator-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
stream_003_off000033e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33E5 25324 bytes
SHA-256: 8e4e10e22008b5288215a132122e7def6c19d37e2b89d23fdb6b6d22aba69157
font_01_sfnt_off00006e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E80 18284 bytes
SHA-256: 25a7dda4fa93a15709e62d61065895c31c9e65ce27a7c8bbaa34224db667a0ef

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