PDF malware analysis — malicious · e3042baf1231ea7f

MALICIOUS

PDF

81.0 KB Created: 2021-07-13 19:55:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 7dc0645988f9aa5efee5c87104e62b55 SHA-1: a5dde114ddf75a08f8aa29c44208e98507d75253 SHA-256: e3042baf1231ea7ffb119f5b75dd05e4bba110a2fd891703ae2232f0bec18942

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs point towards a malicious document, likely delivered as a spearphishing attachment.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

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/hIkXU_AiHkM/square?utm_term=equation+of+tangent+at+a+point
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82d3785664d35b0eae165/1625828663189/xiwabor.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e51812fb7d0b279035f2/1625875736204/general_trinomial_examples.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e80af981ab8d1aa9e0cf61/1625819897911/pozajojam.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e90f5f320dbd0de28069e0/1625886559798/94496536972.pdf
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ecc7e0c27a210cf2bb7218/1626130400560/34864220653.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecab723080d76c7a54a44d/1626123122179/37013450113.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e912d3db8bb141bad8d229/1625887443652/rolasadujijepukibutewi.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d60b09171274fed7e81e/1625871883943/5243908017.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60eda55dc8312e4ee1df1b23/1626187101381/mathematical_modelling_in_control_system.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_off0000d72c.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD72C	16792 bytes
`font_01_sfnt_off0000ef3e.bin` `2b89a5404bf78f794f97d352c17e7da97f157f43826e469ab371b2178f539ede`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF3E	17856 bytes
`font_02_sfnt_off00011ed2.bin` `2101ccf0a970d1c362bdd603b538ce8a21de1dd290b3244db677983438f0681a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11ED2	10448 bytes

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