Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedf65255b4ce784…

MALICIOUS

PDF

81.5 KB Created: 2021-07-22 12:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0901d15598b0eb83020c9ea0b80dee72 SHA-1: 4aafa48552177153c10417a01c1026a03e04e1ef SHA-256: bedf65255b4ce7847df35ed7ccdfe14e1faafca5c0e08ed1e200855b08d87eaf
96 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 high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests a potential phishing or credential harvesting attempt. No scripts were extracted, but the PDF structure and detection results point towards a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/gPkW7oTCsL0/square?utm_term=foundation+of+business+chapter+1
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f1b684cc59ac50dbc0481f/1626453637109/63553513623.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9003b3b63f0898f2e4ae/1626116099397/red_and_white_cabbage_coleslaw.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edff03bf52576c624a9a01/1626210051940/how_to_download_apk_in_laptop.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f01e368fff8309febaff44/1626349110331/as_cool_as_a.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e76953e5d5821bb0e78757/1625778515409/how_invented_the_first_car.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8eb208fb24157da6d8f4e/1625877280658/hurdle_rate_meaning.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eca1de7a6a1626764b7106/1626120670204/92885513134.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f761f6a5a05d5f5f9bf32c/1626825207071/bezefiwuko.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f59d18732ca03aba90f532/1626709273120/power_generation_operation_and_control_3rd_edition_solution_manual.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f469f77f94c710fbd08e48/1626630647929/waxiridafilujizubuwa.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee639c64675e3b9de3b533/1626235804911/download_theri_full_movie_in_tamil.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee7d75b1dcdf258dab6b16/1626242421490/14019025438.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e93fed19a9f87deb73cfb9/1625898989812/betty_and_nicks_bait_and_tackle.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f8d75eab987d687e6a1f32/1626920798654/acquisition_meaning_in_tamil.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0866b09ca025bae42a439/1626375787432/class_10_cbse_science_question_paper_2020.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f8cc98d0dad67a22d6ddf2/1626918040444/788593493.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f247c97f94c710fbbabd63/1626490825983/satomofugiligona.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_off0000dead.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAD 16792 bytes
font_01_sfnt_off0000f6c4.bin
278f7552cc6c0b45f13a93ae1158b90e35b77e98013f351cc09c6c2a7b107285		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C4 10940 bytes
font_02_sfnt_off00010fe1.bin
70359a5a66f157b7ae831f34aaa87488a53606ef1c8b26e44d8eea5e6445890e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE1 15948 bytes

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