Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a25a409983c2cd…

MALICIOUS

PDF

36.1 KB Created: 2021-05-21 13:34:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 22dc8387da12315972deb27304842a5d SHA-1: a1d59272d7ae343fbe48db5ff9db3c9a4eda4259 SHA-256: 64a25a409983c2cd78e624f2d65b55279bcfcdef34ffacf7a89c9f71d677a650
130 Risk Score

Malware Insights

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

The PDF contains a lure for free game items, specifically referencing Roblox, and includes a critical heuristic firing for a malicious redirector link. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-free-skins-in-roblox-game-hack, is identified as malicious. The document body also contains this URL and a call to action, suggesting an attempt to lead the user to a malicious site.

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-skins-in-roblox-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_off00002db2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DB2 26944 bytes
SHA-256: 0ef486c5a37b0e62f099960a1c5d3752b9a2896641212682da47a0a8f2006511
font_01_sfnt_off00006b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B47 18504 bytes
SHA-256: ae7b9a4d98c4f3218572a7a5b8a0359ca417a6e67a065e6d54194df4d1c80092

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