Malicious PDF — malware analysis report

Static analysis result for SHA-256 b578ac2af05c862a…

MALICIOUS

PDF

81.7 KB Created: 2021-07-17 04:15:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 53a7f5797f2f54f235e533d9fba76090 SHA-1: ab95da2318d3a3231fdc3ab50b9953a83ed4ac79 SHA-256: b578ac2af05c862a3c9fb69536e8f1e68dfbec25e260fdefaa39d9f298e135d7
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, specifically one pointing to a feedproxy service, suggests an attempt to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are consistent with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5817

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/~3/4aHNpQc2m6I/square?utm_term=home+access+center+humble
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edf88bd9d5ad70ebd56905/1626208395600/33443002122.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f048d84a8bf902ee070cad/1626360024984/zenumufuvinetuwakimavat.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed8cdbdacdbe35d62b9692/1626180827676/63571982829.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7719a2b69c91f9b41d8b2/1625780634636/zafulo.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_off0000dbdf.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDF 16792 bytes
font_01_sfnt_off0000f3f6.bin
d3b6f5e3583403eb267c25bc8bf5a9c8636e5003d503e66fac63787d05ef4c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 10636 bytes
font_02_sfnt_off00010c12.bin
74c3f649285d9b62edd687c5decd940b0cbc6733ce7887ee3295f196adbe96fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C12 17908 bytes

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