PDF malware analysis — malicious · ef1b0fca3be8130a

MALICIOUS

PDF

80.0 KB Created: 2021-07-16 03:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 38a057372f1936b64a1ee4016f6cbb72 SHA-1: f129d43fb971acc9070b2ea67dbeaed8c1576439 SHA-256: ef1b0fca3be8130aed2df0c3e4043193e33e64058f3bf738a88bfa8879ce6378

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs that likely lead to malicious content, suggesting a phishing or malware distribution attempt. The presence of external URIs and the overall detection by ClamAV indicate a high likelihood of malicious intent, possibly to trick users into visiting a compromised site.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/HbdJGeoIq_s/square?utm_term=types+of+recession
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9aafb3b63f0898f41671/1626118831644/pikawedajapizerepix.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee87125f7927514e41396e/1626244882818/bopunodoko.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e86da8e63b335b383f827b/1625845160072/35635215453.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee68eca005482cc159387f/1626237164772/janaxire.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60efe8f2c0b35f4fb3d9f059/1626335474734/jimanalab.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e77bed73c42b1aacfeec87/1625783277918/64414075476.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ede39c4485e42169025c8b/1626203036440/informational_text_features.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e76c5ce4919b7a951af0d3/1625779293044/fujixurofabufidemu.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0b3a3bc9f575687cb0442/1626387364170/dupenemamejubabi.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d87b.bin` `fbba748bae46a148b6589ca771ca17f0eebce28d1f39cae421c92bc7fdceeae3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD87B	16884 bytes
`font_01_sfnt_off000104b0.bin` `242bbc2610175ff6ee9f0c902bd57c5581312edb9149c1dfc99c7813de7d60d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104B0	10244 bytes
`font_02_sfnt_off00011bdc.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BDC	16792 bytes

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