Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fc2835928aaf4f…

MALICIOUS

PDF

76.2 KB Created: 2021-07-14 04:40:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b94d904401fd3121a8b1d44b17651224 SHA-1: a3ad5cc0ab8c1d2d972f84a64ff68425fc033165 SHA-256: e7fc2835928aaf4f7cc48339a7bc084b7b7c9e46d1925f8bd1087c5ecba9f240
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as a phishing trojan by ML classifiers and ClamAV. It contains multiple embedded URLs, one of which is associated with a feedproxy service, suggesting a lure to a malicious site. The document body is heavily obfuscated, preventing a clear understanding of its specific content, but the overall detection indicates a malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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/um1bUVUAM38/square?utm_term=pharmacy+franchise+cost
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e93d0c5ebba154a8fd2acf/1625898252971/pvp_arms_talents.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee357f6d75c50a5d433bb4/1626223999600/gutagirilinifitilalax.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee2bb607d0587a3761c15e/1626221494767/apa_formatted_annotated_bibliography.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edff1f24c32e4364b7d26b/1626210079834/62433992572.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e847e6bf61d063766b5a00/1625835494115/find_all_roots_of_a_polynomial_calculator.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee1f217426fb5109f28afe/1626218273541/jajesogebaxegeba.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e9654637cb90447561f2a4/1625908550322/personal_exemption_worksheet.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e7e8a4d0799e4214c108d1/1625811108747/3174502175.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec8f91bcf8be39b5062ee7/1626115985450/deja_review_microbiology_and_immunology.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_off0000c8b3.bin
74f38dd207e1388e1adb31b00f078794b2a4c6210d08016222ba7d751f13e6f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B3 16708 bytes
font_01_sfnt_off0000f44a.bin
1226b1ff7f69a9da19bc00fd28f737550fbb0cc93a2f5c7ff57c29ad05438d38
pdf-font-stream PDF embedded font (sfnt) at offset 0xF44A 10672 bytes
font_02_sfnt_off00010ca2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA2 16792 bytes