Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6baabfd6d03d18b…

MALICIOUS

PDF

79.6 KB Created: 2021-07-12 21:40:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3316e580ccd54eb0b7af19ce330a8294 SHA-1: 0be02be3354b3f3a14a5e5bd2640f1c8449690e1 SHA-256: a6baabfd6d03d18b376193057d6b871d6c692cec78c6696e6e63242205dd8967
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains an embedded URL. The ML classifier and ClamAV detection indicate malicious intent, likely phishing or malware delivery. Although the document body is unreadable, the presence of an external URI firing suggests the document's purpose is to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8439

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=there+is+more+in+heaven+and+earth+than+is+dreamt+of+in+your+philosophy
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c32a46a8e17713e393f8/1625801514765/wordly_wise_grade_5_answer_key.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e80ebc51cb2a526cfe8c1b/1625820861017/83885155644.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e86f137b2085302d90c40f/1625845523414/microbiological_analysis_of_water.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7ab27a1add4dee1eb984/1626110642209/94047166952.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e9347892abcc18c4f6c125/1625896056600/togogijavumili.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_off0000d524.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD524 16792 bytes
font_01_sfnt_off0000ed36.bin
9ce3338d0bc590f48876cd65e4e9c0fd9e8af55fc43b6c645078eba595c7145f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED36 16588 bytes
font_02_sfnt_off0001184f.bin
d5fe0ba5def0992c1fa00d503ef13b041c304b021a78c33df4dd50ed5c07f377		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1184F 11008 bytes

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