Malicious PDF — malware analysis report

Static analysis result for SHA-256 950924c61526f6dd…

MALICIOUS

PDF

29.1 KB Created: 2021-07-04 19:59:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 396df3969d456fb1b331579f96fc34a3 SHA-1: 6abd564d4f48f838f45f12ef7a185e66036eff62 SHA-256: 950924c61526f6dde756cc05384bb0bb6e7b9c749302aa78c4c6cbd6203a06cb
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, pointing to a malicious URL. The document body also contains the same URL and a call-to-action phrase, reinforcing the phishing attempt. While no scripts were extracted, the primary function appears to be directing the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier clean score 0.0337

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 http://netcdn.tw/app/406889139/coin-master-hack-version-2021-download-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
font_00_sfnt_off00001a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A95 22820 bytes
SHA-256: 27a2a3dc426be57d3b48a34588ac96db9459a46d51a8fae9a4915ce7ee7c458d
font_01_sfnt_off00004dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAC 19120 bytes
SHA-256: 57291a1557c3b3cfaf2211bc97aa7d4df3f086592edbbb7333689b1754ce491f

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