PDF malware analysis — malicious · ac0777548b00d082

MALICIOUS

PDF

81.2 KB Created: 2021-07-15 20:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 8d77b582c396c745eee7e49dd6d5b8bb SHA-1: 264402ef6f018177910c08220bb67353e27b6c34 SHA-256: ac0777548b00d0820b8fd691aed37b8073ae5a347789f0943b267d3d7fe69259

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating it likely contains an exploit. The presence of embedded URLs suggests a phishing or credential harvesting attempt. The file's structure and heuristic firings point towards exploitation for client execution, likely delivered via 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/iXsW93xxTQA/square?utm_term=kenmare+to+portmagee
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f044fafd683a7867ce432a/1626359034145/overachievers_tvb_watch_online_free.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8162ff9c8b53cea231d8/1626112354523/54634884387.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee692d33d4654651c0141e/1626237229676/kiverufimirajiz.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee87787dee9f188f7c72fc/1626244984729/wodulexilozosenisasito.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec91b7bcf8be39b50663d2/1626116535990/82562163967.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec854b950202184f10c914/1626113355812/69929006585.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e901dcf492d21a0f699c7e/1625883100629/sojewalodonukulofez.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eda7fe0999c45203733b0e/1626187774544/expressing_future_time_exercises.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec81df12c1416d2f1ab00c/1626112479570/girinetepadomafo.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_off0000d917.bin` `7af20583d53de61b5c3c124abbaadb0e43d3499b65b00903584bb3d41cc11494`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD917	18364 bytes
`font_01_sfnt_off00010878.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10878	16792 bytes
`font_02_sfnt_off0001208f.bin` `83f3ba9c237b0e5a8c196000b95f2af42f70c4286000df5ab1fe40ba89d94dd1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1208F	10280 bytes

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