Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a4989df85bc401…

MALICIOUS

PDF

34.5 KB Created: 2021-05-17 11:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0c503cc601b560f1ffdb5e56d276ec70 SHA-1: 0b42f7e5dfccb4e49571cc0e3204a8dbb4b6b5d6 SHA-256: 09a4989df85bc40151e4d63a16dc7fcd2fa5f7e24bab605718d52bccfec37344
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free clothes on Roblox' and includes a prominent call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR'. This lure directs users to a malicious URL, identified as a known redirector infrastructure. The document's structure and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/how-to-get-free-clothes-on-roblox-2021-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_off00002920.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2920 27428 bytes
SHA-256: b45dd2a32763c52497fbfaa876e4384d44161e37c18230323334c140adecaa1e
font_01_sfnt_off00006586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 18372 bytes
SHA-256: 1ba3164b87c6983b29ff863ef70b16e044d43d7471b6bccef161c15645062eb1

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