Malicious PDF — malware analysis report

Static analysis result for SHA-256 458f4303c63b62e6…

MALICIOUS

PDF

80.6 KB Created: 2021-07-17 06:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 224d988dfd6d970f496d5bd2b9ead72d SHA-1: 28941f44c1f4dc82bca0c437b57f065fcb91f5e9 SHA-256: 458f4303c63b62e64781b9480de4c1164cbe65d5e303802d15df4285df155608
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The embedded URL, although labeled as benign, suggests an attempt to redirect the user to external content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of embedded URLs and the overall malicious verdict point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8666

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/razvivatel/yapz/~3/XMoLd4EPXkg/square?utm_term=transport+from+bayswater+ielts+listening+answers
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f22ca9b84a576e6cf4c290/1626483881181/coopers_ale_house.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f07baef7631232ce105b89/1626373038512/animal_cell_and_plant_cell_3d_model.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f01412365a201d3c3a3c59/1626346514991/how_long_does_it_take_to_get_the_results_of_a_background_check.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8840379f63424433f8527/1625850883897/diversion_in_swahili.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e88cbf838ace6d86d32002/1625853119872/wawoxu.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ede40f3e0111437128ed89/1626203151702/59375033929.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1bd65f4420e6bd9fca73e/1626455397821/81340683791.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_off0000d7dd.bin
83ea00c7af7f4ae38dbd3764b2baf9ada196d64ecfd6dc3296bc27fd8d42e6a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DD 11004 bytes
font_01_sfnt_off0000f152.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 16792 bytes
font_02_sfnt_off00010964.bin
5349d42148ce7429a39828d6942459acc5d2dd7ec407af29fd4ce0520d71a494		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10964 17132 bytes

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