PDF malware analysis — malicious · ec02ca6ded580751

MALICIOUS

PDF

78.2 KB Created: 2021-04-03 02:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02

MD5: 5e50cceeceb7fcb0c9ae0cf097ed974e SHA-1: 2e039aba26c781ab7063880843819086bba016a4 SHA-256: ec02ca6ded58075123b3bcfe6de29c93ce7c2ffb29a8628058d0bf6ada06c3ba

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with a primary suspicious URL pointing to 'jumiwimov.ru'. Heuristics indicate the PDF is a link farm on disposable hosting, and ClamAV detection confirms it as 'Pdf.Phishing.Trojan'. The ML classifier also strongly flagged it as malicious. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content, likely a phishing page or a downloader.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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
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://jumiwimov.ru/strik?utm_term=korean+dictionary+app PDF link annotation
- http://honey-love.ru/siramopazefuxixe6uut.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4427529/normal_601b8de787cd6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450345/normal_6037eed8dc035.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486201/normal_60253b25d5bd0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379626/normal_603e85bfa5630.pdfIn PDF document text
- http://baltika-trans.ru/471139145668q8bc.pdfIn PDF document text
- http://sopesukenapad.scienceontheweb.net/whirlpool_edr1rxd1_refrigerator_water_filter_filter1_3-pack.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486045/normal_60358a655ec78.pdfIn PDF document text
- http://japancar-sib.ru/796269629740vdh4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4471706/normal_6028e33ae2e28.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/vipuxafol/39129708630.pdfIn PDF document text
- http://vowojuxibaxo.myartsonline.com/kamimosuzeluligifabijupa.pdfIn PDF document text
- https://s3.amazonaws.com/fonazuzixagizir/37723945034.pdfIn PDF document text
- http://nabenejajoko.myartsonline.com/teenage_romantic_books.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c398abb8-5f40-4d8a-924b-c8bb4f03cad2/why_use_a_pie_chart_to_present_data.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5a40b7a5-7011-4ea0-b7ac-1ece8f5b8079/wireless-n_wifi_ap_repeater_and_router.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4369b6eb-20f6-4dda-aec6-f17214cf317c/how_many_types_of_font_in_html.pdfIn PDF document text
- https://s3.amazonaws.com/nilititonawafim/nozibonetalamabivezake.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7cd75ab7-083b-4c4d-935a-9ac2eab6cfea/how_to_set_up_a_sports_betting_business.pdfIn PDF document text
- http://retiziwo.myartsonline.com/worshipping_false_gods.pdfIn PDF document text
- https://s3.amazonaws.com/pizexopenaxu/chiari_11_malformation.pdfIn PDF document text
- https://s3.amazonaws.com/rurosaveruk/nerekanameko.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7fb62ee6-60b5-40b0-b166-a3ad931a4c39/hunter_douglas_motorized_shades_cost.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e9fd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9FD	4716 bytes
SHA-256: `da9b237361380bb16b99996574769078b0236df1383eee0dd6729bda3d19d8da`
`font_01_sfnt_off0000fa15.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA15	10268 bytes
SHA-256: `0552f9a043c39184fe346a01258f7e709634ce20963f8a8558947a3ea1730234`
`font_02_sfnt_off00011d44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D44	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

Open this report in the interactive analyzer, or submit your own file for analysis.