PDF malware analysis — malicious · b4da130c8ad6bfe8

MALICIOUS

PDF

71.0 KB Created: 2021-02-22 04:06:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03

MD5: aa39b3169c19a00067acb827a74b900c SHA-1: 768421c0a6f843ccb0ed5a60c857576c0b395ce8 SHA-256: b4da130c8ad6bfe823832ae7fe985210530e50ec6218df07b60f62a738ec8051

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to 'dbt distress tolerance skills pros and cons' to entice users to click the embedded link.

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://bologen.ru/strik?utm_term=dbt+distress+tolerance+skills+pros+and+cons PDF link annotation
- http://smartcoin.design/4534852846403nlk.pdfIn PDF document text
- http://lekezoreg.22web.org/90368405120.pdfIn PDF document text
- http://nimened.66ghz.com/platform_bed_ikea_canada.pdfIn PDF document text
- http://songkfrk.site/pimiwezupidomijoredp9cq.pdfIn PDF document text
- http://topcreditreport.info/sojimefog5enqw.pdfIn PDF document text
- https://cdn.sqhk.co/kagixepo/4jbrXB7/tukiborogo.pdfIn PDF document text
- http://lastmarkt.ru/dudorapazuzoresemikodudolla8cm.pdfIn PDF document text
- https://cdn.sqhk.co/zasokolof/iaOhehc/54008475029.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/miledu/70271853067.pdfIn PDF document text
- http://povalimokuwov.rf.gd/dreamweaver_for_ubuntu_14._04.pdfIn PDF document text
- https://s3.amazonaws.com/rorives/25753967217.pdfIn PDF document text
- https://s3.amazonaws.com/petikamov/international_continence_society_guidelines.pdfIn PDF document text
- https://s3.amazonaws.com/rabewiruzitewa/d._e._b._s_full_movie_mkv.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d8a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8A3	5268 bytes
SHA-256: `78dae30194300a5e696e09b89301cfd5b5da6e0e29ca1cfc02e14be61b321786`
`font_01_sfnt_off0000ea99.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA99	10612 bytes
SHA-256: `f931b9007714d847ee32d61a4fb8454b5e7b869186bcc0454b8fee38aac3403b`

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