PDF malware analysis — malicious · cfb6ddf4f2736c57

MALICIOUS

PDF

68.0 KB Created: 2021-03-02 05:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17

MD5: 0ef3b5352cb490377c6b77ba1d479f96 SHA-1: 9ff1d82548123927d8a2da8d6f60e25e37d2103f SHA-256: cfb6ddf4f2736c579a14c2da317519c81195db2c7d257ff99b2ba8f05fc6f33b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The embedded URL and document body suggest a phishing lure, attempting to trick users into downloading a malicious PDF by appearing as a search result for free books. No scripts were extracted, but the presence of external URIs and the overall detection suggest it is designed to deliver a malicious payload.

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://golowaki.ru/wix?keyword=benny+hinn+hindi+books+pdf+free+download PDF link annotation
- http://bexukitekivotap.22web.org/57460364173.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4487416/normal_5ff0bbf6716ae.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/nitidadufetenu/gifisube.pdfIn PDF document text
- http://putesedesupelo.epizy.com/esr_tb_report.pdfIn PDF document text
- https://s3.amazonaws.com/rodiligarexo/22070368903.pdfIn PDF document text
- https://s3.amazonaws.com/defujo/2016_form_1040_line_44_instructions.pdfIn PDF document text
- http://kemogozamamov.epizy.com/72647444897.pdfIn PDF document text
- https://s3.amazonaws.com/wulagisi/41482897913.pdfIn PDF document text
- https://s3.amazonaws.com/zosevid/mutated_zygomites_osrs_guide.pdfIn PDF document text
- https://s3.amazonaws.com/kavugusepe/ishmael_by_daniel_quinn_audiobook.pdfIn PDF document text
- https://s3.amazonaws.com/zesotat/85969374024.pdfIn PDF document text
- https://s3.amazonaws.com/xonaxevetaf/vijebewamato.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_off0000cd1e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD1E	5576 bytes
SHA-256: `25934bd6be0387cbcb1f573819ba586c28898e04d1fc4eff2007eecd2ca1f33e`
`font_01_sfnt_off0000e029.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE029	10184 bytes
SHA-256: `362fc9e80cb6ce476c85a5f264d714e238388f4613b26a1cb059f8023057557b`

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