Malicious PDF — malware analysis report

Static analysis result for SHA-256 4200de55d423b28c…

MALICIOUS

PDF

40.0 KB Created: 2021-05-16 08:31:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 116e59018e19b604984a2f473398fd30 SHA-1: 6c1dc8b67e27eb6a1828da714a8ed5d8907a98ed SHA-256: 4200de55d423b28cc128b366521288dcbafa3c0847246fac7a1ab88a56cdbd15
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a lure for a 'free Robux hack' which redirects to a known malicious URL. The document body and heuristics indicate a social engineering attempt to trick users into clicking the malicious link. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for client-side exploitation or redirection to further malicious content.

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/free-robux-hack-2021-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
font_00_sfnt_off00003546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3546 25412 bytes
SHA-256: c1aaaed0fad0ef4ccb97dbfe94dd0ade1c6aedf1bfc7a0d01753bf24463de0d7
font_01_sfnt_off00006f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7954 18816 bytes
SHA-256: b2e74e066e927f416452387fe7118a02e4882588ce64a473b0bf6318b488dee0

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