Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01fee0f7784be50…

MALICIOUS

PDF

37.8 KB Created: 2021-05-16 04:30:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 964d33831d41e85dcc77ef28ca1ed1bc SHA-1: 70be7f866589916e44d769f5931fa6cf76a49aaa SHA-256: d01fee0f7784be508728c72a9f8aa499d413558522facdd2ba9bcf809156cdc7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains text and embedded links that promote a 'free Robux generator' and a 'game hack', which is a common lure for phishing and scamming operations. The primary malicious URL identified, https://netcdn.xyz/app/431946152/how-do-u-get-free-robux-2021-game-hack, is flagged as a malicious redirector. The document's structure and content strongly suggest an attempt to lure users into clicking this link, likely for malicious purposes.

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/how-do-u-get-free-robux-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_003_off00003363.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3363 27048 bytes
SHA-256: 26660a2ffc166954dc576238f50d5f263e634faaf8d87d3ddb1462e20e3e9105
font_01_sfnt_off00006fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDA 19040 bytes
SHA-256: 14ed63897d8c38c9b74f4ae6c685ddc963b8153977262fdb6411d06658c720a7

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