Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4a2dd823ae76a7…

MALICIOUS

PDF

77.7 KB Created: 2021-07-14 08:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d5f6756e924e0c9555b36bc1a815e463 SHA-1: b0e2f48c2ce455a02caa405fbe726da10af19820 SHA-256: fd4a2dd823ae76a7da52c4411b7a161c3be9dfd4b78006a1a837eb3171f7a92d
104 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 phishing or trojan threat. The presence of an embedded URI and the 'Urgency / deadline lure' heuristic suggest the document is designed to trick the user into clicking a link. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which could be used to facilitate the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/uzX87CUNjRg/square?utm_term=child+dysentery+medicine
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec87b70d838b6c850d5ad4/1626113975504/examples_of_multinational_and_transnational_companies.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee669f6d75c50a5d4688b5/1626236575153/46563191557.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60edf1b1172ba47bdac5da90/1626206641551/all_about_beethoven.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e78c72e8ef4d41b4f5e631/1625787506117/hilary_mantel_an_experiment_in_love.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_off0000ceb6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB6 16792 bytes
font_01_sfnt_off0000e6cd.bin
6452b1dfc2b04436110eccadeef44ec5817a66874ce64d3a19b17446659ce999		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CD 10496 bytes
font_02_sfnt_off0000fe79.bin
26e1c6f7cb6052681946f699f52a9b5b9f037076252aed2f94cf1eef8a04b478		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE79 16984 bytes

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