Malicious PDF — malware analysis report

Static analysis result for SHA-256 717f0f2462319024…

MALICIOUS

PDF

37.4 KB Created: 2021-05-11 15:06:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b22d42aa4de62028fb0c45b27484f4a9 SHA-1: ec1661f295d816562f16382982ff00ba48bdf099 SHA-256: 717f0f2462319024e91d147338171384f05deda71a1da59cdbf7f53ce3b0c751
130 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL associated with 'game hacks' and 'free generators'. This indicates a lure designed to trick users into visiting a potentially harmful site. The presence of a 'download button' heuristic further supports the idea that the document is attempting to entice the user into an action that leads to compromise. While no scripts were extracted, the PDF structure and malicious URL strongly suggest an attempt to deliver a payload or phish for credentials.

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/479516143/bad-minecraft-free-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_off00003603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3603 26320 bytes
SHA-256: 8fa3a24f858984ad53c6cc02e6b462e78930102a7d64ce995d04cb0ebf98134d
font_01_sfnt_off000071d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D3 17956 bytes
SHA-256: 384105d45f3b455646b6eb64dcdb09349e5e1756e4baf8ede6c7c1462ef2dc47

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