PDF malware analysis — malicious · 82c5c87dd9b6a24f

MALICIOUS

PDF

90.6 KB Created: 2021-07-13 19:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: bd95eb61553131876273a1baa2035d39 SHA-1: d0594aeca249eee4e2daa00003faea0cc8995adb SHA-256: 82c5c87dd9b6a24fb0cc6933558bb42781fef8779b66475b2d936a7a6189c6a3

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a Google feedproxy URL, which is likely a lure to redirect the user to a malicious site. No scripts were extracted, but the presence of an external URI and the malware detection suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9533

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/~3/5JeRQhMeIYg/square?utm_term=grenada+and+the+grenadines
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7f7e245e16b3be7eaf0f1/1625815010612/45662120054.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec84cc7726b430b4685afe/1626113228901/use_of_under_preposition.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8e260dc37083541b579d4/1625875040626/swot_analysis_of_dell_company.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e855ed53ddad680c09d173/1625839085644/xepedutanabisavofiw.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8c4ca596d362fd0fbff17/1625867466710/64667689943.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e9343d8915684aa53deb4d/1625895997973/98062321384.pdf
- https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e7ab69e8ef4d41b4f813db/1625795433213/zasufubabolumuzo.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60eda09850566b3f8666490d/1626185880940/glencoe_geometry_chapter_3_mid_chapter_test_answer_key.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_off0000fb8b.bin` `8fcfb86feac75da6abe22790a2cd9491d9d6a1590d4a232ce84d86fbad2493a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB8B	10400 bytes
`font_01_sfnt_off000112d1.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112D1	16792 bytes
`font_02_sfnt_off00012ae3.bin` `ce2c269f42f58cfa1d9b0d09cded827479bed37a9ae3777b731d6172ca84c74d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12AE3	21100 bytes

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