Malicious PDF — malware analysis report

Static analysis result for SHA-256 06569bcfd8384d7d…

MALICIOUS

PDF

43.7 KB Created: 2021-05-11 22:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c755d61a342797f9655d0a4f573428ab SHA-1: 64d276388263cb9244a96e55684a3accb627e430 SHA-256: 06569bcfd8384d7dc4f270bc67294df31d861c2e48478e8774e822fd78da0108
138 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and a call-to-action button, directing the user to a known malicious redirector URL. This suggests a phishing or scam attempt designed to lead the user to a potentially harmful website. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0115

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/games-that-give-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000036ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36AE 24952 bytes
SHA-256: a51ec0a15c0097069c2b1647c032a18fd3467199a1331f38dc55b122575543c8
font_01_sfnt_off00007065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7065 2880 bytes
SHA-256: 552e62132cae3603ce0819827e44d96a992bd06014cc5080bf3af4b2ea155b3e
font_02_sfnt_off00007a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A38 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off000086e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E0 19004 bytes
SHA-256: 2c8b49b77d2c215152c292f7884bc67c80baba545cc8313e1cf14c5f8a523509

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