PDF malware analysis — malicious · 9050312c16afe35a

MALICIOUS

PDF

76.6 KB Created: 2021-07-14 09:36:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: 83e45bbf1d2a9792d420cae8f0c42bd0 SHA-1: a72fbe702a5e35496543c847729cb04e73194b01 SHA-256: 9050312c16afe35a7cceb774488bf36511124ba995693b12a19f6b0a1c34f96c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of embedded URLs, despite some being marked as benign, suggests an attempt to redirect the user to malicious content. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall indicators point to a phishing or malware distribution attempt.

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/sq/ugae/~3/4P1vZUbBa90/square?utm_term=how+to+connect+my+ps3+to+the+internet
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec9e7151a87c5d75ae671c/1626119793628/kojekupavupom.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60edbc4c5f7409549af920ee/1626192972451/recessive_disorders_related_to_genes_found_on_the_x_chromosome_but_not_on_the_y_are_more_commonly_expressed_in.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec92719c874e714248f340/1626116721318/mathematics_of_investment_and_credit_5th_edition_solution_manual.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee3795e7148d06bc707976/1626224533864/lcm_of_4_12.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee23361cf0e6777f2c8358/1626219318488/spelling_rules_book_5_answers.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee3c82114e6b7b7de6d9b4/1626225794664/house_flipper_pc_trainer.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edaf3cc8cbd011b90d837a/1626189628261/83089762372.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_off0000cd18.bin` `35d63724148c9d41c2f24190c1ea60b3299de5905149a976d3585164a518f14e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD18	10792 bytes
`font_01_sfnt_off0000e5cd.bin` `06403dd13cdc9b2015d8a0b3ccbc0236c310b632aa44bca3f77be7a71716197d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5CD	15788 bytes
`font_02_sfnt_off00010e4d.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E4D	16792 bytes

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