Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed06566a0a3b06c…

MALICIOUS

PDF

40.6 KB Created: 2021-05-13 10:38:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e1f4a77462aff726df7026954d557067 SHA-1: cc05a85d24c41d6ee82be429a3556d0d4579a74b SHA-256: eed06566a0a3b06c187f28885378e4183f5925cf6e30484ed1b30143a29c69e6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a redirector lure, specifically pointing to a "free generator / game hack" website. The embedded URL, https://netcdn.xyz/app/431946152/robux-gift-card-free-game-hack, is identified as a known malicious redirector. The document body also contains text related to 'Robux Gift Card Free' and a call to action to access a Roblox generator, reinforcing the lure. While no scripts were explicitly extracted, the nature of the PDF and its embedded link strongly suggests an attempt to direct the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/robux-gift-card-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000362c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x362C 26784 bytes
SHA-256: 2aa4820b255436aa26a42ab30f391df32a34707431d842dff3f0418d04ac4edf
font_01_sfnt_off0000726b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726B 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00007c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 18640 bytes
SHA-256: dc19c2dc7c571358abc7904f3409549de68542ff7a2dde77b507fd070c6276df

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