Malicious PDF — malware analysis report

Static analysis result for SHA-256 17b3851f8ea681cf…

MALICIOUS

PDF

37.5 KB Created: 2021-05-10 11:44:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: cc2125f4706b6f159a13787f0dd55dd7 SHA-1: b91d8bd3db95befc7351679f27476140390105da SHA-256: 17b3851f8ea681cf07820d801027b19bcd8cbc8392b69ba486a189946b926cec
110 Risk Score

Malware Insights

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

The PDF document contains text and a prominent link that mimics a download button for a game hack, designed to trick the user into clicking it. The embedded URL, 'https://netcdn.xyz/app/479516143/wurst-hacked-client-1.12-2-game-hack', is identified as a known malicious redirector. The heuristic 'SE_CLICKFIX' indicates the document likely attempts to bypass macro restrictions by instructing the user to execute commands, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

Heuristics 4

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/wurst-hacked-client-1.12-2-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_off00003877.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3877 25340 bytes
SHA-256: d4c3dba223fca2c678bbc151ec68c8f52a8ed5134bf3b1ec4d39a5d21f3e954f
font_01_sfnt_off00007055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7055 18620 bytes
SHA-256: 80e22772db7eca57705c0187b86df7abc8931c2a6d79ddee303f8eb1dbbde651

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