PDF malware analysis — malicious · b0b9b046522ea572

MALICIOUS

PDF

76.1 KB Created: 2021-03-18 03:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f98179537321cf9c26945ad8c9cccc8a SHA-1: 796e41d9550c6732b58a85241f5d92b32ae0a447 SHA-256: b0b9b046522ea57207cc4a6639549c31802ff9e80677f9f8a226b441872e5497

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The document body, though heavily obfuscated, appears to reference a book chapter title, suggesting a lure to disguise the malicious intent. The presence of external URI heuristics and the ML classifier's high confidence score indicate a strong likelihood of malicious activity, likely phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/wix?keyword=caer+en+tentacion+capitulo+25+parte+2
- http://gabubixaj.22web.org/walter_bagehot_lombard_street.pdf
- http://trastenmyqort.online/toravonhaqpa.pdf
- https://static.s123-cdn-static.com/uploads/4455406/normal_5fe3c34a5652c.pdf
- http://betijeduw.getenjoyment.net/lujuwoxefupar.pdf
- http://bumawusuka.mypressonline.com/67882840746.pdf
- http://asia.kiwi/jarojolodojimumelumufaw1qxfn.pdf
- http://kowojolajamuv.getenjoyment.net/the_hunger_games_2013_movie_download_in_hindi_720p.pdf
- http://foyou.store/860317070575326b.pdf
- https://cdn-cms.f-static.net/uploads/4421940/normal_601f19ef525dc.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/waxapoz/31359913145.pdf
- https://s3.amazonaws.com/ronatiduzoxij/64581284995.pdf
- https://s3.amazonaws.com/puretulenuza/appraisal_announcement_email_format.pdf
- https://s3.amazonaws.com/wefadep/jizunawam.pdf
- http://bewomad.rf.gd/kejozutamotagevamowi.pdf
- http://zobuwijezad.onlinewebshop.net/rupunazinu.pdf
- http://rususekobijo.myartsonline.com/aromaticity_antiaromaticity_non_aromaticity.pdf
- https://s3.amazonaws.com/kotodur/bujesidu.pdf
- https://s3.amazonaws.com/sewamos/kaxakirawedon.pdf
- https://s3.amazonaws.com/kuboki/81899252213.pdf
- https://s3.amazonaws.com/jipowumat/weresaxuvo.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e71d.bin` `369d5a0fde96b212af81525b4b981b373a77d151803d8b461b9e2bf26cd3b888`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE71D	4912 bytes
`font_01_sfnt_off0000f7e3.bin` `a5a5fb2e488796bf7a2814bb3b5a608bf7687359ace938e0e88d30c9ff3e673f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF7E3	13072 bytes

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