Malicious PDF — malware analysis report

Static analysis result for SHA-256 f23495dc528bf560…

MALICIOUS

PDF

51.8 KB Created: 2020-08-24 05:28:07 Authoring application: Smallpdf Desktop First seen: 2021-06-13
MD5: 9ab72ef28e2368fb6044bf6f6e603eed SHA-1: 344cd80305d5819cc562b6c51a86dca3957826ca SHA-256: f23495dc528bf5600f6c2daa1255c79a08adc9a2df650d3b660a53d108531877
142 Risk Score

Malware Insights

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

The PDF file is identified as malicious by ClamAV and exhibits characteristics of a phishing lure, including an image-only design and a clickable action trigger. The embedded URL 'https://crophysi.ru/square?utm_term=astm+a36+steel+plate+pdf' is flagged as a known malicious redirector, indicating the document's intent to lead users to a harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0026

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 51 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crophysi.ru/square?utm_term=astm+a36+steel+plate+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a02b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA02B 11440 bytes
SHA-256: 8b1d290a568c441682e8704a55b2e7465663f4d017f5b9d4ba6ced5195fa8127

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