Malicious PDF — malware analysis report

Static analysis result for SHA-256 1268e576da88c61b…

MALICIOUS

PDF

77.6 KB Created: 2021-07-16 05:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a092c9b9c05ea8b8cb024ea311a19a7e SHA-1: 972ec4fc7a47c50107d4cac43145ef53c293186b SHA-256: 1268e576da88c61b05758c095bdcfde3e7c28fce8ad193d6578d80ed84bb1070
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains embedded URLs that likely serve as lures or downloaders for malicious content. The presence of PDF-specific heuristics suggests exploitation of PDF vulnerabilities or malicious object embedding, consistent with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8897

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/EjZ5HCEZs_A/square?utm_term=attitude+in+the+workplace
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edc127bf52576c62442135/1626194215778/7th_english_guide.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca8f24f2b1c51afa77458/1626122482159/14908340717.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e7df2e1d61f435cef81268/1625808686368/football_manager_2018_apk.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f02aa6874a183f1c4295ea/1626352294628/minecraft_but_on_one_block.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f042ba39c5d52effba3f52/1626358458601/the_cast_of_step_by_step.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee4aa0df274736e0ac99b6/1626229408230/ft_1000_fastest_growing_companies_2021.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_off0000cfef.bin
c1a9ac952c151626d4f80ca1a1aa5968333eafd8a75883c49db317dfdb84fa5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEF 10704 bytes
font_01_sfnt_off0000e87e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 16792 bytes
font_02_sfnt_off00010090.bin
51a962686130647eea1edb3b3749e0b90d4cecf9338513bc5989e9d4f175a906		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 16300 bytes

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