Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f007886e5714d5…

MALICIOUS

PDF

35.9 KB Created: 2021-05-16 23:08:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ff352caac9b073cd423687983c73199f SHA-1: 5c4ef305ee38978c016aeb6c8d3a933b62e8fbb0 SHA-256: 66f007886e5714d52309c7e83fbe66e3e4c6daf76b353c3eacea3fe3db18dfa6
130 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 game hack generator, redirecting users to a malicious URL. The document body explicitly mentions 'Roblox Hack Site' and includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. The embedded URL is associated with known malicious redirector infrastructure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0265

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-site-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_off0000314c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314C 25292 bytes
SHA-256: 3f8dac860b7688e010762f0a0cba93a62503885146e0773a993cbf6d92b62fcb
font_01_sfnt_off00006aa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA1 18408 bytes
SHA-256: baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952

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