Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d331da4e60c77ef…

MALICIOUS

PDF

79.2 KB Created: 2021-07-14 06:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b6795d4cc3e3daf549c1413ecb1ccb57 SHA-1: 3bb77045468ad04bd5d7e466216ac8628423dc29 SHA-256: 4d331da4e60c77efac99a291e5458029c03f05e0c377d71781a3690220a5f59a
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 embedded URLs, although some are marked as benign, suggest an attempt to redirect users to potentially harmful sites. The PDF structure and metadata are consistent with a phishing lure, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/~3/5VO7y1TeAqQ/square?utm_term=how+to+clean+plastic+storage+drawers
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee4f1a6d75c50a5d44fe13/1626230554773/what_is_trending_in_clothes_2020.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e7d08915684aa53a28d0/1625876432842/pre_experimental_research_definition.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e898481f813e7271aeb430/1625856072505/pivot_table_in_excel.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e904218ce0e10532d19cb2/1625883681500/zewaled.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_off0000d1bd.bin
afd98d31d960e9301af11e1700acb15549ec925d7fe906384c64be17d3723ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BD 10764 bytes
font_01_sfnt_off0000ea6b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6B 16792 bytes
font_02_sfnt_off0001027d.bin
3b6aaf16def57ac2e8048fbacb56979ae5e36541adbe98b62a44006fbcf7f101		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1027D 17620 bytes

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