PDF malware analysis — malicious · 41b10456fc41f74d

MALICIOUS

PDF

66.1 KB Created: 2021-01-13 18:42:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: e285757cba2f09e1eded87d87268b7ef SHA-1: 97f4a91f4192fc5c3cb766483a97cc00ee5ac813 SHA-256: 41b10456fc41f74dd8df455533c0f87686acf4b8d1ad341c8dd08da538c0987b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that masquerades as a book title, a common lure for phishing or malware delivery. ClamAV and ML classifiers strongly indicate maliciousness. While no scripts were directly extracted, the PDF structure and embedded URI heuristic suggest it's designed to redirect users to malicious content.

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://trafficel.ru/123?utm_term=leadership+theory+and+practice+6th+edition PDF link annotation
- https://cdn-cms.f-static.net/uploads/4418781/normal_5fbf09103ab21.pdfIn PDF document text
- https://cdn.sqhk.co/kurotevu/MhEhdgc/hockey_training_facility.pdfIn PDF document text
- https://cdn.sqhk.co/gebijowokobe/cgfhieS/samituja.pdfIn PDF document text
- https://cdn.sqhk.co/kepilujofeje/MgiAcja/global_warming_solutions_act.pdfIn PDF document text
- https://site-1178726.mozfiles.com/files/1178726/76920556111.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4449777/normal_5fbafb36eeafd.pdfIn PDF document text
- https://site-1178453.mozfiles.com/files/1178453/88587509367.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/ribowexulo/frinton_on_sea_primary_school_ofsted_report.pdfIn PDF document text
- https://s3.amazonaws.com/jasadavebaga/47898169076.pdfIn PDF document text
- https://s3.amazonaws.com/dazifozixawus/google_sheet_filter_by_color.pdfIn PDF document text
- https://s3.amazonaws.com/lumixi/3766599810.pdfIn PDF document text
- https://s3.amazonaws.com/rerinago/sexatipurazeb.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_off0000c426.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC426	5324 bytes
SHA-256: `e25feca7dcca7304ad7a67a48004294e50d3aaa654a22c1a63234006e500c062`
`font_01_sfnt_off0000d64c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD64C	11088 bytes
SHA-256: `8243ae2befa7b84276906ed85ad394760aa51a8377ce78767e3eea50969a60f9`

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