PDF malware analysis — malicious · 0c2559c77a358d89

MALICIOUS

PDF

79.9 KB Created: 2021-03-28 01:38:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f040751480b47e6e72b0763dfaa0609c SHA-1: d4efb9d447ead23ae1906f858977475fe4d1cf78 SHA-256: 0c2559c77a358d89c9a83b68957e92b2a915c61090b39c6a4a78202f04e88d62

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that leads to a domain associated with malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The PDF structure and embedded URI heuristic point to the document's primary function being to redirect the user to a potentially harmful external resource.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://druttle.ru/wix?keyword=electron+affinity+periodic+trend
- https://cdn.sqhk.co/ropikenetu/8HjicMB/subarekenolodexogupuxoj.pdf
- http://cyberlife.store/modebapebitazibama8.pdf
- http://nagafokom.iblogger.org/asymptotes_chapter.pdf
- https://cdn.sqhk.co/gevagedubop/v62gfib/bogglesworld_crosswords_answers.pdf
- https://cdn-cms.f-static.net/uploads/4475217/normal_601e3f36d0860.pdf
- https://static.s123-cdn-static.com/uploads/4366305/normal_5ff8d74649cdf.pdf
- http://oyuncuxx.com/mojuflj5oe.pdf
- https://cdn-cms.f-static.net/uploads/4497697/normal_60471b6465244.pdf
- http://ruvaruvifovuk.iblogger.org/yadav_brand_song.pdf
- http://metryck.info/39891876632d3gsj.pdf
- http://zufepatajuju.22web.org/86713983575.pdf
- https://static.s123-cdn-static.com/uploads/4502567/normal_5fe294e51bdb9.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://luzavevamafidix.epizy.com/panuxad.pdf
- http://kuporalegumema.epizy.com/83649642522.pdf
- https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_51db8c52cd7c48aaae19c250c707e95a.pdf?index=true
- http://labapok.rf.gd/jopegomovapinibaxi.pdf
- https://f803bf1b-e1c2-47f6-a41f-c9785c88fbd4.filesusr.com/ugd/bf07b1_55ef1836a5eb4a98bad25e8b209b58a7.pdf?index=true
- https://2e4d99de-9d37-4ce2-abd5-0bbccafdbe51.filesusr.com/ugd/33a2e4_90eeecc3f97f45faad23b369057e6f06.pdf?index=true
- 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_off0000fada.bin` `d0265a85a87cfa68ffb8701435e0b69a2094a2af923e1888f6f27195e370c4d3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFADA	5032 bytes
`font_01_sfnt_off00010c1a.bin` `4fe027a6b15f9caf7bb73f19d9f52d4d99a44b7e7c1e380352b162fdc7509dea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10C1A	11292 bytes

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