PDF malware analysis — malicious · f76450cb68955438

MALICIOUS

PDF

67.8 KB Created: 2021-02-04 22:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: fadbe9f2b4eb44ff78e98299373594ef SHA-1: b9abfd0a2112afbcc85be9af399d5426df0b31a7 SHA-256: f76450cb6895543850e528b0287754926f8115d9681c236e726ea05e043171a9

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains an embedded URI pointing to a suspicious domain, identified as malicious by ClamAV and an ML classifier. The document body, though heavily obfuscated, suggests a lure related to 'Mi cuarto in english'. The presence of external URIs and the overall detection by multiple security tools indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=mi+cuarto+in+english PDF link annotation
- http://giocodigital.space/12197150135iu2ga.pdfIn PDF document text
- https://cdn.sqhk.co/vujagefamig/2k4byd4/89836195258.pdfIn PDF document text
- https://cdn.sqhk.co/kitujesijak/gjbiew8/wugakaru.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4474211/normal_5ff22a2ac945b.pdfIn PDF document text
- http://apsmall.space/vulnerability_assessment_toolsvbgg9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4425912/normal_5fd1193622b3d.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/vavejijitatofu/rurerubevomaj.pdfIn PDF document text
- https://s3.amazonaws.com/suzujewa/cabinet_ministers_of_india_2019_english.pdfIn PDF document text
- https://s3.amazonaws.com/libosokune/30610144860.pdfIn PDF document text
- https://s3.amazonaws.com/mujevubutukoxu/learn_spanish_for_beginner.pdfIn PDF document text
- https://s3.amazonaws.com/zuxime/99107419418.pdfIn PDF document text
- https://s3.amazonaws.com/xisakazelelinim/55648922248.pdfIn PDF document text
- https://s3.amazonaws.com/bupesejirijejus/alcatel_5059a_manual.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_off0000cddb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDDB	5064 bytes
SHA-256: `727193ca8a8190028deb7e41803e44bd954f329b4ff4e7edb3110f8602cf23de`
`font_01_sfnt_off0000df16.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDF16	10620 bytes
SHA-256: `12f9058257668d0d0457535f14ddac70207ae477e4409774dc03678e0f5e1c03`

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