Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe459963ed93fa57…

MALICIOUS

PDF

32.0 KB Created: 2021-05-20 17:14:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6b67abc36e5d2b0c9385727ad9d4d98d SHA-1: d3fe79912ab15d0d107bb11b8f4bc41592722602 SHA-256: fe459963ed93fa57141c466bfb59f440d547251209bbe154b22a5bdde4438977
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Free Robux App Real Game Hack" and embeds a link that redirects to known malicious infrastructure. The document body also contains a call to action to "CLICK HERE TO ACCESS ROBLOX GENERATOR". This indicates a phishing or scam attempt designed to lead users to a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0622

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/free-robux-app-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
stream_002_off000025cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x25CD 24268 bytes
SHA-256: 6ecaa1ee6aad70fe348860f8cae50096e3575f9fe5a899bbaa8f53c20b7d92b2
font_01_sfnt_off00005d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 17724 bytes
SHA-256: e2f5c18b11874b1fe7864b35fd265545f55bf519199d9c0481f047a24a8ddf9f