Malicious PDF — malware analysis report

Static analysis result for SHA-256 523aeba3a5227b9a…

MALICIOUS

PDF

38.0 KB Created: 2021-05-13 02:10:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6143ee80852dda72c8cbb017752eb3b4 SHA-1: 81f7b28866ea2d8ae82766432871d0ea94be575a SHA-256: 523aeba3a5227b9a51fb51da1fd03cba2c342e6f7020ccb2b4df2be14627736a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, directing users to a malicious URL. The document body and embedded artifacts are consistent with a social engineering attempt to trick users into visiting a site that likely hosts further malicious content or downloads. No scripts were extracted, but the primary attack vector is the malicious link.

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-free-robux-no-verification-2021-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_off00003368.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3368 25932 bytes
SHA-256: dfbb3929d7837b2313864b3b03595a7e21133894e9d4f285d4d983825004b289
font_01_sfnt_off0000704c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704C 19164 bytes
SHA-256: 96effbdae210045e90f33644c7199b62eda4c51e6e40441412be2e574896d09f

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