PDF malware analysis — malicious · b50377e7ef0743ea

MALICIOUS

PDF

78.9 KB Created: 2021-03-29 16:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: e97a9abdf0c788ff3d33dce8fa5a1786 SHA-1: e9939b0fb919a9a3cd30e3887e2d21e32083f9b5 SHA-256: b50377e7ef0743eac71010f8dc89830c775628a270a301f672b472d191fe5d06

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically for brand-impersonation credential phishing. It contains numerous links to disposable hosting domains, many of which are likely part of a link farm designed to obscure the final destination. The primary lure appears to be related to 'Tenvis camera wireless setup', redirecting to a phishing page impersonating Amazon.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rogaturo.weebly.com/uploads/1/3/1/0/131069781/fugudesapaseko.pdf.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://soxebez.ru/strik?utm_term=tenvis+camera+wireless+setup PDF link annotation
- https://rogaturo.weebly.com/uploads/1/3/1/0/131069781/fugudesapaseko.pdfIn PDF document text
- https://fijitedutim.weebly.com/uploads/1/3/1/1/131164269/457ef19195475.pdfIn PDF document text
- http://rozujed.sportsontheweb.net/bimutugatiji.pdfIn PDF document text
- https://lutomired.weebly.com/uploads/1/3/5/3/135316507/3204959.pdfIn PDF document text
- http://pukebebizadolu.mypressonline.com/blush_faces_of_shame.pdfIn PDF document text
- http://lotefevedajo.22web.org/how_to_run_a_online_retail_business.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4428052/normal_60606bd363f28.pdfIn PDF document text
- http://gepanukotex.getenjoyment.net/84246536474.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385617/normal_602b581e611bf.pdfIn PDF document text
- http://nipokaxa.getenjoyment.net/the_blame_game_tour_dates.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4485689/normal_605aab16e6479.pdfIn PDF document text
- https://gedowejokose.weebly.com/uploads/1/3/4/0/134040639/jedunidolesera-sasijiwa-mulajuzekim-zupif.pdfIn PDF document text
- http://demetoga.iblogger.org/the_reformed_faith_loraine_boettner.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372080/normal_603378410b000.pdfIn PDF document text
- https://wavafebezed.weebly.com/uploads/1/3/4/5/134527209/nirote.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/910c1042-82a1-4670-93fe-2c0ad034cf4f/cien_anos_de_soledad_pelicula_online.pdfIn PDF document text
- http://jefeduwikiw.epizy.com/63374255793.pdfIn PDF document text
- http://kotujed.epizy.com/area_of_triangles_worksheet_grade_5.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/286b5022-ba56-43f2-92c7-4cc852afad72/12100469076.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e7a54b1e-4af4-4cb0-b5d1-557b920f4806/81894496691.pdfIn PDF document text
- http://vizomonuzujo.onlinewebshop.net/spelling_bee_words_list_for_grade_1.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_off0000f777.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF777	5180 bytes
SHA-256: `9c52d77f0d27998f12814c2afd6e189a1d8c92d741457c7882c49b500754cadd`
`font_01_sfnt_off00010916.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10916	10932 bytes
SHA-256: `4a60049d34d67f7bdde1a16b25d0dc9ddfc112f21dab038384e722a16aef0e74`

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