Malicious PDF — malware analysis report

Static analysis result for SHA-256 00dd9f66f8e174cf…

MALICIOUS

PDF

39.8 KB Created: 2021-05-13 02:10:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 651ac2bd570d9939a0beca79a87f48d8 SHA-1: 8f3eef6ae46a30f819c9e53680903fe6b0da9449 SHA-256: 00dd9f66f8e174cf507b2e53b94c491f87d822e3fff88552cfc4fd0db46b39ff
130 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a lure for game hacks and redirects to known malicious infrastructure. The document body contains text such as 'Original Roblox' and 'CLICK HERE TO ACCESS ROBLOX GENERATOR', reinforcing the lure. The embedded URL points to a malicious redirector, likely intended to deliver a second-stage payload.

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/original-roblox-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_off000033bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33BB 24668 bytes
SHA-256: cdbec213702099918909f20cfcd5d7d53d5cd38bb8ebef3bbac789520b71e7fc
font_01_sfnt_off00006ce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE6 3608 bytes
SHA-256: 608f0dd4f6bfb6adbccec84228618ee8e4c9e09226d7330efb5300e499d1567f
font_02_sfnt_off0000796d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796D 18420 bytes
SHA-256: 07637e756c9e476f76e6aac07d93055443532b6fc7e48bcbb320a9c3212a4919

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