PDF malware analysis — malicious · 4b97f180daededee

MALICIOUS

PDF

280.2 KB Created: 2021-03-15 16:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 4597a8bf1072f378483d232d9df25f22 SHA-1: b37450af2aafad7bef29a09f03a8af2337d69bd7 SHA-256: 4b97f180daededee0ba4d444a0c357751d1cbf3507efd7658a41170c1d21e144

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF document flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicates a phishing or advance-fee fraud attempt. The embedded URL 'https://mezovuduw.ru/123?utm_term=b+s+p+full+form' is a primary indicator of compromise, likely serving as the destination for the scam. No scripts were extracted, but the PDF structure and heuristics point to a social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9834

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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://mezovuduw.ru/123?utm_term=b+s+p+full+form PDF link annotation
- http://rofuxipof.mywebcommunity.org/schneider_electric_building_management_system.pdfIn PDF document text
- http://roxelejabojafe.scienceontheweb.net/what_is_the_plot_of_noughts_and_crosses.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443588/normal_603231da413b3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4390638/normal_5fe795cf414ab.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377647/normal_603920678c028.pdfIn PDF document text
- http://suraneb.scienceontheweb.net/gapelijawedunakitoxiv.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412896/normal_602e5ad5ac778.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470380/normal_603de01280b20.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474978/normal_60136ca95618c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413573/normal_5feb1af795a38.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481400/normal_603d99e019002.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://f4b9ed98-44c1-44e6-9966-d9817cd43de7.filesusr.com/ugd/9ced5d_3d725703585e44b68e62eb923eebe248.pdf?index=trueIn PDF document text
- http://saluwagasa.onlinewebshop.net/tunapupamipolinezukalep.pdfIn PDF document text
- https://s3.amazonaws.com/xufoxorog/nogefevujazomeve.pdfIn PDF document text
- https://s3.amazonaws.com/lebaxa/86364160919.pdfIn PDF document text
- https://s3.amazonaws.com/rilexazejuzovep/carers_allowance_form_ie.pdfIn PDF document text
- https://s3.amazonaws.com/vosimalume/12188325626.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f826dc5b-7a99-4f84-9dfa-74ea96ceb1d0/how_to_use_hamilton_beach_ice_cream_maker.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/75d89f38-0139-4768-87c7-bfa290103d30/zopisaxariletip.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d36e92bb-c9d2-4220-ba6a-ebc4fe702dda/is_singing_permissible_in_islam.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1cf12d05-3d74-4048-a753-9c00eaa26d4d/tabla_de_distribucion_normal_n0_1.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9366fb4-560c-4505-9715-96af21300d2a/how_to_clean_a_slush_puppie_machine.pdfIn PDF document text
- https://436c154b-1c2d-4c60-9768-ed3a268ef5e1.filesusr.com/ugd/e8e253_e4bfda0fef37482b90ef2499aa21a4de.pdf?index=trueIn 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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000403d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x403D5	4888 bytes
SHA-256: `b84a27b423841a5e74cd7509e5a97b59ab7b3943acc1a37cc223654880e2cbfa`
`font_01_sfnt_off00041462.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x41462	11856 bytes
SHA-256: `e45be43cb4e67c883ea61915b86d94080239f59b3d9e33cff5d331a6c6361986`
`font_02_sfnt_off00043cdb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x43CDB	16084 bytes
SHA-256: `04e99a91d2540df590e11a1437fd0f4bcd1d02fe5f8a454eb75df058f4e668e1`

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