Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0df1e3e15588ca…

MALICIOUS

PDF

75.2 KB Created: 2021-07-17 12:16:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a8a47b7a5de32c5f4665339b0cb25377 SHA-1: 957a197fd7cc10fe0396fa6d1710634370d54784 SHA-256: ab0df1e3e15588cab81fc94601ca3c67e8e6f86064e6405c594d528154100e89
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains embedded URLs that are likely used to redirect the user to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML detection suggest an attempt to exploit the user, possibly for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7746

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=non+solicitation+agreement+sample
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec8bd03a853d606aed5c33/1626115024227/91466853006.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f1f59492fca032d2ef9e45/1626469780985/cast_from_the_mummy_returns.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee3fb3b1f8b9564885e9fe/1626226611854/zufukaruwusulez.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e960c4787dde1a90aff238/1625907396688/75254940594.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_off0000c738.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC738 16792 bytes
font_01_sfnt_off0000df4a.bin
cc6f2b45914c1608dfc6ad563c0a472216c8a6fddcb23098e9dcb54815b81cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4A 16012 bytes
font_02_sfnt_off00010898.bin
507ef69467bed24477000e92cb5e8fe7ad2931552242e1338d844c846c2d030e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10898 10696 bytes

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