Malicious PDF — malware analysis report

Static analysis result for SHA-256 e814f742eb63610d…

MALICIOUS

PDF

76.5 KB Created: 2021-07-12 20:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: abcded5dec27d70688289f05c5b4988e SHA-1: cbab3902d111b65cdee2410f22e866ff0f02f421 SHA-256: e814f742eb63610d1e0c8f2631ff3c42847c3da0f9ce3b03968422707bd8aab7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also indicated a high probability of maliciousness. An embedded URI points to a URL that, while currently marked as benign, is part of a pattern often used in phishing campaigns to redirect users to malicious sites. No scripts were extracted, but the presence of a URI and the detection signatures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

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/HbdJGeoIq_s/square?utm_term=set+a+timer+for+47+minutes
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e910d85ebba154a8fb8cc2/1625886936723/23568086404.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7e2e19a16f038d61c94b/1626111534614/75885749873.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec7fb5dd2ac847ff7e3b3a/1626111925936/38177372165.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec770f0cf33f708d79227e/1626109711789/the_earth_is_not_overpopulated.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec78745978cb5ccaa9a8c5/1626110068857/how_many_1_liter_bottles_equal_a_gallon.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e82217fdc75e32ab0a5e87/1625825815623/mobinijiwowimelolopeji.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_off0000cb4e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4E 16792 bytes
font_01_sfnt_off0000e360.bin
b6d7e3f78a39eb708490418fcd718b504184983acc9b10d64955292e7568a617		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE360 16476 bytes
font_02_sfnt_off00010de8.bin
1ca9eae1f376b20bbbe7269542a9f8050a301a98e56b165309e57d76a91204dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE8 10632 bytes

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