Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce6ea93491d22f4…

MALICIOUS

PDF

78.0 KB Created: 2021-07-12 21:39:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7a7e2438acdbf66a460fba55bc12c790 SHA-1: 4342649d1ca382a3af0d421ad8f08d5f97579ca7 SHA-256: 3ce6ea93491d22f49e87e5f75e90523f03d1dac0c2ee97f4ec1f7030a25eb71c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains embedded URLs, suggesting it may attempt to redirect the user to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded content are indicative of malicious intent, likely related to social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8755

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/qQn0o4eTdIQ/square?utm_term=education+research+topics
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec7d9f6ad76c09748f9961/1626111391415/laplace_transform_questions_and_answers.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e9540b0cbdad4d35075a2f/1625904139904/reading_and_comprehension_worksheets_for_grade_3.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d59e123eaa19f8fd0523/1625871774303/retaining_meaning_in_kannada.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7b57ff9c8b53cea1a0ab/1626110807969/brittany_murphy_jaime_pressly.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e812424454ab0ddd880aab/1625821762394/2862226973.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e877dc6b13e67beb16f261/1625847772808/how_to_draw_marvel_characters_step_by_step.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e916a30cbdad4d350569c2/1625888419277/unit_5_homework_1_monomials_and_polynomials_answers.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_off0000d480.bin
c52bfda78ae6c8459c7fa897cd36f07eb8ca07f871914e9a1cec44dd6c748385		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD480 15480 bytes
font_01_sfnt_off0000fbee.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEE 16792 bytes
font_02_sfnt_off00011405.bin
29292350a587d18dc25b314913028ddb9feb0e04d78aa41b2cf207fe41c35ea0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11405 10648 bytes

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