MALICIOUS
136
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ML classifiers and ClamAV, and heuristics indicate a payment redirection lure. The embedded URL `https://crewmak.ru/square?utm_term=accounting+and+finance+for+managers+pdf+bharathiar+university` is likely part of a phishing or credential harvesting campaign. The document body is heavily obfuscated, preventing a detailed analysis of its specific content, but the overall pattern suggests a Business Email Compromise (BEC) style attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.8601
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LUREDocument describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://crewmak.ru/square?utm_term=accounting+and+finance+for+managers+pdf+bharathiar+university
- https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ed2faec927da2a63f80902/1626156974994/rososedadul.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f02c0d0d8d0805bdb7671c/1626352653928/17432929601.pdf
- https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0332fd777570416562798/1626354479768/music_metronome_online.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee3b557dee9f188f78765d/1626225494049/zajaf.pdf
- https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec991bbcf8be39b5073111/1626118427580/lee_county_water_and_sewer.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca9537d354a5e86a69194/1626122579911/2nd_puc_economics_textbook_in_english.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e81efd46a8e17713e75eb7/1625825021811/fewigulamejawufajaguforul.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_off0000e595.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE595 | 16792 bytes |
font_01_sfnt_off0000fda7.bin8ef58645162a00d35f2025c3ffc96bef7c01353e92b321658419738f465fe073 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDA7 | 17132 bytes |
font_02_sfnt_off00012a95.binc917ef0833b5f98b524232481c1fa8b4664b22cd2b467eb06a72846464a70b2c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A95 | 11424 bytes |
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