Malicious PDF — malware analysis report

Static analysis result for SHA-256 47287e250f709670…

MALICIOUS

PDF

85.6 KB Created: 2021-05-15 16:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7b049c09d9e7df01c454c4b798545d9e SHA-1: 3e585710fe691a8b1aa1d37098001c2fa8ad2520 SHA-256: 47287e250f7096701804c49811f85c0c4f42ac71998ee44a1e7e3a80f6d16d65
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=how+to+connect+beats+solo+2+to+ps4 PDF link annotation
    • http://jinijazutafenix.22web.org/diy_baking_sheet_storage.pdfIn PDF document text
    • https://basalolevezuw.weebly.com/uploads/1/3/1/6/131606508/ff038.pdfIn PDF document text
    • https://xolopebowuraj.weebly.com/uploads/1/3/4/6/134600193/radewetumobuko.pdfIn PDF document text
    • https://dowoxadi.weebly.com/uploads/1/3/1/3/131380004/a6ab791c6d13913.pdfIn PDF document text
    • https://femodamokej.weebly.com/uploads/1/3/4/5/134529999/549ec.pdfIn PDF document text
    • http://mivukiwoluwuj.iblogger.org/kipiwozopogemotom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481403/normal_60667ed11261c.pdfIn PDF document text
    • https://wufisosudima.weebly.com/uploads/1/3/0/8/130874090/805205efa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5fd8c790534fe.pdfIn PDF document text
    • https://fofirajajamide.weebly.com/uploads/1/3/4/6/134643930/ritopewowupa.pdfIn PDF document text
    • http://rorejidefozuroz.iblogger.org/1001_arabian_nights_free.pdfIn PDF document text
    • https://gofubajub.weebly.com/uploads/1/3/4/6/134632898/fozimifidotiga-mizitezap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_6034ce3e73e75.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445531/normal_602303c99876e.pdfIn PDF document text
    • https://lifofokir.weebly.com/uploads/1/3/1/6/131607054/7d2cfb8c16e.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a91873a8-1f5b-4151-915d-af39eb211f25.filesusr.com/ugd/3f80ec_468f769e099c4cd4ae6ded2864dbb477.pdf?index=trueIn PDF document text
    • http://muwumatenenuli.rf.gd/16879230264.pdfIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_efff1629afb946769f8989413f02a13b.pdf?index=trueIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_330d7d3d871b45ce977315a8af69096f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lerezazo/chiari_malformation_decompression_surgery_risks.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/angelo_s_soccer_corner_uniform_ordering.pdfIn PDF document text
    • https://db244590-af71-4c33-bd6e-2f8f55f31281.filesusr.com/ugd/fdab61_a7e1d644108d4788b60342fe1cb16fa4.pdf?index=trueIn PDF document text
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_3cae8e8ab9e540d3a7531cdb791bbe57.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/numunenoji/eureka_multi_cyclonic_pet_vacuum.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.

FilenameKindSourceSize
font_00_sfnt_off00010207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10207 6168 bytes
SHA-256: 0e87cd05f332aeb2a72b3daf131c0310eff8a4a40b86507956a7cca2f5d1d305
font_01_sfnt_off000111a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111A9 5244 bytes
SHA-256: 36959ae9c2ab8b23652ed1d89705b2d8c4e561f539d946ba575e8c2bdc532b44
font_02_sfnt_off000123ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AD 10652 bytes
SHA-256: 22d4da8c197f492fb4c014a0a0e4050797b6bb0ffd467916f1a1f93195c4e340