Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e03ce1ddef6fc0…

MALICIOUS

PDF

77.2 KB Created: 2021-07-14 04:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b0ed9c7abccc51db6267b4047b96c073 SHA-1: 1d1889a8b767d4372e986ca4d36baa31e644cf24 SHA-256: 80e03ce1ddef6fc0125afe784c22baf595142d5504750a6a05328c686eef8f41
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is flagged as potentially malicious by ClamAV. The ML classifier also indicated a high probability of maliciousness. The presence of these URLs suggests a phishing attempt, where the user is likely directed to a malicious site after clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

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/hIkXU_AiHkM/square?utm_term=do+subsidized+loans+have+interest
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93817b673687559687caf/1625896983726/dobipizusewa.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e77cf2c3921e7af63a09fb/1625783538762/ds_160_manual_application_form.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee0a852ee8b51fd9313a4b/1626212997586/formula_for_finding_the_missing_side_of_a_triangle.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec918d05183b3b579e7cad/1626116493440/rewomig.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_off0000cc73.bin
3490dc8b582b99eeb4dbbd6635722793a47e106f4a089768a74056bd8952f4b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC73 16776 bytes
font_01_sfnt_off0000f86d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF86D 16792 bytes
font_02_sfnt_off00011084.bin
9cd044ac1eee4cadb4e008e50201a78fc059bf44fb7a0c76986aaeef7aed8371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11084 10712 bytes

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