Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4969832ee888855…

MALICIOUS

PDF

71.3 KB Created: 2021-07-17 12:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 81aef53f352341a78d7fa74616e2663f SHA-1: c9671a3efa243659fcf63881ff6d1d9f46e66b2d SHA-256: b4969832ee888855d08016de307ffd2ad8f63233898e6baef82337694b37e965
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites or download further malware. Although no scripts were explicitly extracted, the PDF format itself can contain JavaScript, which is often used for malicious purposes like exploiting vulnerabilities or initiating downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8216

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://feedproxy.google.com/~r/sq/ugae/~3/1LSSs5qy-i4/square?utm_term=dell+laptop+operating+manual
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee2a71bb85ab7f02bba251/1626221169888/31734720637.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec828f12c1416d2f1ac7de/1626112655202/find_the_equation_of_the_line_that_passes_through_the_points_calculator.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec91a051a87c5d75acff84/1626116512918/xeroron.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee478d115d504d3a8704c7/1626228621753/92430126166.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7a787726b430b4673f22/1626110585075/setw_in_c.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba6f.bin
58d03a6565dbccdd0cede0df9659b1d130a08bc0377cfd36d8a793e36d145d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA6F 10528 bytes
font_01_sfnt_off0000d259.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD259 16792 bytes
font_02_sfnt_off0000ea6b.bin
62ff5f62ee099109a7b09f5f31b6198831e8d874ed168db91d9c794d5bc2857a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6B 15692 bytes

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