Malicious PDF — malware analysis report

Static analysis result for SHA-256 533ca980afa04d2b…

MALICIOUS

PDF

37.2 KB Created: 2021-05-19 01:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c4f9627f65d4ea0f856760fcd9a862ce SHA-1: de5c574c57622a42feb7d27f46b4dfc79e6ed474 SHA-256: 533ca980afa04d2b99ad93de8416491a41ad150ad94cd7c43f4a97d5752ae589
130 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising 'Roblox Hacks And Cheats'. The document body also contains a prominent call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. This suggests a phishing or scam attempt designed to trick users into visiting a malicious site, likely to download further malware or engage in fraudulent activity.

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-hacks-and-cheats-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_off00003313.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3313 26100 bytes
SHA-256: 61f82a5a37ec1fd68eb50cd19d94059f6e8feb424a0f9389b72fa3c875677d6c
font_01_sfnt_off00006ef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF0 18624 bytes
SHA-256: fd38699d39b76a4f9eae772e1d62c447b40f492bf7651a7365d5b223074a20b1

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