PDF malware analysis — malicious · 45f5f0a4ccec51aa

MALICIOUS

PDF

75.0 KB Created: 2021-03-25 01:30:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02b12fa8d217975860355d293ac0b120 SHA-1: 54e65277841aad4535aa18a16ef2a9758422d7ea SHA-256: 45f5f0a4ccec51aa7147868e4ee4c9295560df727e89cc93fc56e0b2e0db5717

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV. It contains an embedded URL that is likely used for phishing or to download a second-stage payload. The document body, though heavily obfuscated, appears to be related to the embedded URL's query, suggesting a lure to trick the user into clicking the link.

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://nipisod.ru/strik?utm_term=is+a+marriage+in+another+country+valid+in+the+us
- https://cdn-cms.f-static.net/uploads/4472763/normal_6013e7b1e9209.pdf
- https://cdn-cms.f-static.net/uploads/4489412/normal_6050f57000b55.pdf
- https://cdn-cms.f-static.net/uploads/4476927/normal_5fd30fab2194e.pdf
- https://cdn-cms.f-static.net/uploads/4448556/normal_603f392eb3ef3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://riramemixezu.epizy.com/probation_declaration_form_for_teachers_kerala.pdf
- https://s3.amazonaws.com/geradi/85405154702.pdf
- https://s3.amazonaws.com/desekusoxi/logica_aristteles.pdf
- https://s3.amazonaws.com/xurixado/what_is_the_difference_between_valid_void_voidable_and_unenforceable_contracts.pdf
- http://kupavojos.epizy.com/english_verb_tenses_chart_worksheets.pdf
- https://s3.amazonaws.com/xovekolamoxe/dijoboluvivirivafuwapeb.pdf
- https://s3.amazonaws.com/rozebofukixus/tozerazibesudifas.pdf
- http://lidiremuvuzanas.rf.gd/demographic_segmentation_example.pdf
- https://s3.amazonaws.com/xesigeze/wisixibuzuxuge.pdf
- https://s3.amazonaws.com/zamuriza/civil_air_patrol_bdu_uniform_regulations.pdf
- https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_c7e56e459e3a436ba4e4a5a5c7aa9c24.pdf?index=true
- https://945b3f91-9c76-4178-be32-f0dab3cfe2c6.filesusr.com/ugd/8d5d69_8e7fa0840d4e4cc2ac033f5b6c95695e.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_off0000e893.bin` `63b47e2ac4f45c9819e4fa5d18fcd4714da27de0d7c8872a6f6d16ab8f9c4d31`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE893	5452 bytes
`font_01_sfnt_off0000fb01.bin` `aa2e6afd0b8c2f98d0c379cf10d625084dd3e2e80a852553793f03006fdf736b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB01	10568 bytes

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