PDF malware analysis — malicious · eee9fda7ed9c2fac

MALICIOUS

PDF

75.1 KB Created: 2021-07-14 09:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 0736ed8d98c4552979998a2d7a4a5ad8 SHA-1: bef915e6935a735c8fbea21de168411583b509a8 SHA-256: eee9fda7ed9c2fac4e7db98a8c9b0b487eb9ce14dd4d81c4f07d28eb13228801

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 by a heuristic as an external URI. While the document body is heavily obfuscated and unreadable, the presence of these URLs suggests an attempt to redirect the user to a potentially harmful site, possibly for phishing or to download further malicious content. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9163

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/razvivatel/yapz/~3/4Ji06Fp1PxY/square?utm_term=not+a+polynomial
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e84bece3cefa6a22918ed6/1625836525003/difference_between_quantitative_and_qualitative_variables.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edc8cc3be50f2c5dab6f5f/1626196172592/sijaze.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edd6a2e55429721e201e09/1626199714900/belt_lipectomy_before_and_after.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e835a825441e1b3789a5cc/1625830824366/project_on_recruitment_and_selection_process.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ecb6dd5b92cb3d5f9f09e6/1626126045375/28272490825.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee5f3d39b82603386c41dc/1626234685285/watch_the_croods_a_new_age_full_movie_free.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8bf26c0e666153b741ab8/1625866022299/44880241037.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_off0000c5ff.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5FF	16792 bytes
`font_01_sfnt_off0000de16.bin` `1216a3a35b9bda639d9f09ca97370f06a2f39028183a7c2c26e9831e74e004db`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDE16	10104 bytes
`font_02_sfnt_off0000f48e.bin` `fa207fd35aecfda45328ce8ecd9da81781dcf35a66c7bb881cb45cd7a7955218`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF48E	16924 bytes

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