Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd985dfdfafe9d1a…

MALICIOUS

PDF

39.9 KB Created: 2021-05-19 08:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b0fcf66f024e5809abe674194d9e14c3 SHA-1: 3149a50d5d6d3dd924431f6ffcdbcb26e3dcf4d1 SHA-256: dd985dfdfafe9d1a08f4f37e887ba72b1dfb8cadc8141d6764ffecd96b430d14
130 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL, 'https://netcdn.xyz/app/431946152/how-to-get-robux-without-paying-game-hack', is identified as a malicious redirector. The document body also contains text related to obtaining Robux without paying, reinforcing the lure. While no scripts were explicitly extracted, the nature of the PDF and the redirect link suggest an attempt to lead the user to a site that may exploit vulnerabilities or host further malicious content.

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-to-get-robux-without-paying-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_off00003620.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3620 29924 bytes
SHA-256: a6413f212fa6cbd87d38f4b9ed1c9ed4796c075c594869354f2e7e4ccfdf4d64
font_01_sfnt_off00007753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7753 19452 bytes
SHA-256: f617277b03f9c5e21d6c79dcd1607af3478f90b0cb5df5fc079a11a568c69004

Open this report in the interactive analyzer, or submit your own file for analysis.