Malicious PDF — malware analysis report

Static analysis result for SHA-256 e982c349c0d54023…

MALICIOUS

PDF

77.3 KB Created: 2021-07-14 00:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bbe38f4534342bb3f2eb72ccc1d2a243 SHA-1: 1c35e67c7837441cbd008a0b39b612cd08d0b7df SHA-256: e982c349c0d5402391609374cb21e81b43231f0e0ff4e38a1089b7f1c2155378
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 PDF contains embedded URLs, one of which is flagged as potentially malicious, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded content are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8907

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/EjZ5HCEZs_A/square?utm_term=can+my+dog+have+pistachio+nuts
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee01108f209f4d82879525/1626210576331/molecular_biology_of_the_cell_6th_edition_book_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e83bfef87ec6517a59618c/1625832446735/mo_real_id_requirements.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edff406f118478735f76dd/1626210112695/elements_of_a_one_act_play.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edaa148b02447bbddc9943/1626188308675/wavobovaruwozufusobo.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec8802950202184f1109df/1626114050755/61315624169.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e776e5639fd3490b8f05f3/1625781989781/how_to_hold_a_bass_trombone.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_off0000cfe0.bin
d404d2c05d0f3fa363082bda06fbc879a829885873f708a44ccf3ea50e96f0f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE0 11124 bytes
font_01_sfnt_off0000e98e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE98E 16792 bytes
font_02_sfnt_off000101a0.bin
e9e41ee4100479227c5bc242b723d49ccfd5181927d1df36372e0f7b47e387dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A0 15092 bytes

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