PDF malware analysis — malicious · 0457f61a40ca2a6a

MALICIOUS

PDF

113.0 KB Created: 2021-03-16 22:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a2a87b2b201d764fb99b552c37083a66 SHA-1: d15ebc3f5df7b6a758f7c520cca70d45b052338f SHA-256: 0457f61a40ca2a6a10d243462312af72d39d1e89064a0ad6bcbaff37b9ba114f

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 domain associated with malicious activity. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to tax returns, suggesting a phishing or social engineering lure.

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://jumiwimov.ru/wix?keyword=tax+return+calculator+2020+irs
- https://cdn-cms.f-static.net/uploads/4446045/normal_6014fb3387889.pdf
- http://tejasatobes.medianewsonline.com/47192497800.pdf
- https://static.s123-cdn-static.com/uploads/4454982/normal_5ff5daa9c5ea3.pdf
- http://fdvsefwfrw.space/diners_club_login_corporate7gbzz.pdf
- https://cdn-cms.f-static.net/uploads/4375515/normal_60419c48e9acb.pdf
- http://podeves.xyz/pinitiwopafedatizudaaqvgp.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kozewuposoridil/2165877969.pdf
- https://s3.amazonaws.com/wovitiku/xasadadepenunatawitijon.pdf
- https://s3.amazonaws.com/figugipopar/19893088722.pdf
- http://vibirokudod.myartsonline.com/26632913120.pdf
- https://s3.amazonaws.com/xijalovelokolep/risagotododaxuk.pdf
- https://s3.amazonaws.com/poguvelefa/52558396045.pdf
- https://s3.amazonaws.com/jifedefujodu/apache_tomcat_64_bit_windows_10.pdf
- https://s3.amazonaws.com/vososasoxumete/wikasedefogiwufudig.pdf
- https://uploads.strikinglycdn.com/files/f57b119c-00c1-4ad4-a3b1-77757230be7b/kuterumika.pdf
- https://uploads.strikinglycdn.com/files/fdd245d9-dffa-49fa-8a71-d8549cdbf468/what_is_inclusive_curriculum_in_early_childhood_education.pdf
- https://uploads.strikinglycdn.com/files/708076f5-fafc-4fe7-aa53-f944938d008e/latin_for_dummies.pdf
- https://uploads.strikinglycdn.com/files/39527551-f384-4810-b7f5-e795c8032ad0/how_to_make_soda_water_at_home_recipe.pdf
- 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_off00017fc4.bin` `691d8e36c11334b72468a8df24e86e286451cc525ffde2ec876af79d5b095a87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17FC4	5084 bytes
`font_01_sfnt_off00019120.bin` `b70d6e61ec63bedc106fb23faaf99c77231244bbc6f1c888da925ee655014c60`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x19120	11204 bytes

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