Malicious PDF — malware analysis report

Static analysis result for SHA-256 0feaf4ab10bf1178…

MALICIOUS

PDF

94.5 KB Created: 2021-07-19 22:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 911ea2984863ef6ed06e7d5ce0f76610 SHA-1: 9a7e9b6e9532cda6550327fd11e4228d8ff4c2bc SHA-256: 0feaf4ab10bf117833ab62f2e0b9d5d0178fd9f444ec75bc9dde0bea2d78712e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL that, while currently classified as benign, is indicative of a phishing attempt to redirect users to a malicious site. The PDF structure also shows signs of manipulation with duplicate object bodies, suggesting an attempt to evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6187

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/qI_NY8u86tA/square?utm_term=365+drawing+challenge+2020
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f2b0149c7c9f0ea9931da1/1626517524213/17670224540.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8efecb630645a0ef51d3a/1625878508506/rules_of_integration_multiplication.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f4da60db752c5e49bd927a/1626659424743/73059436601.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_off00010f64.bin
d38c98a6bcc63a904f83815eebf6db2dc5848f87475e78b223d957ec94eac623		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F64 10968 bytes
font_01_sfnt_off0001289a.bin
3646095eeebfdabae963dd6a2a5c2fe48f2b9d15a340b549b945155c5df7a0c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1289A 17500 bytes
font_02_sfnt_off0001569c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1569C 16792 bytes

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