Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc679206f18010a4…

MALICIOUS

PDF

77.6 KB Created: 2021-03-21 22:37:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 163bf535a765885ce71259cf9477ab30 SHA-1: 99121a7eace0fea8a4ded223ce528e70b11995e9 SHA-256: dc679206f18010a485ed3d41709733fb6a2cd27f370db36440385a17a885b8b5
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, with a primary external URI pointing to 'https://vilenefex.ru/wix?keyword=nick+hipa+caparison'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is structured as a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. No scripts were extracted, but the document's structure and embedded URLs strongly suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://vilenefex.ru/wix?keyword=nick+hipa+caparison PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366625/normal_604eb132b815e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486368/normal_6031d99aaa0c9.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/pnicMji/623936031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480397/normal_5ff5e8077da9a.pdfIn PDF document text
    • https://cdn.sqhk.co/nulojokine/a5iinV1/coupons_for_wish_may_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/nOgihbD/jitojubivuguvejagotet.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
    • http://warufadul.rf.gd/52406021622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/676df796-80ce-4c07-b267-5503c8bae094/formato_de_carta_poder_para_viajar.pdfIn PDF document text
    • http://rizizevifixelu.epizy.com/bmw_n54_auto_vs_manual.pdfIn PDF document text
    • https://7835c217-6b95-46a1-915a-76cdebae3fe0.filesusr.com/ugd/debfb4_dd335cdfd740454dbc11cad0b7bfa6c0.pdf?index=trueIn PDF document text
    • http://dipibezepipes.rf.gd/16783341118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7eacd7a-06b6-439c-b64d-1a9d56530b8f/9972854436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33ca6d4-e7a8-41a2-9ad0-d49cb9417e09/my_texas_hunt_harvest.pdfIn PDF document text
    • http://nabimugupifasif.epizy.com/cerfa_cession_vehicule_remplissable.pdfIn PDF document text
    • http://sexesivakolek.rf.gd/online_information_and_database_access_or_retrieval_services_oidar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/793163a5-518a-4ff8-b314-3dae563c8e7e/37634572563.pdfIn PDF document text
    • http://zigerakujig.rf.gd/acrobat_editor_cost.pdfIn PDF document text
    • http://zijodere.rf.gd/86223755914.pdfIn PDF document text
    • http://milodip.epizy.com/45626466957.pdfIn PDF document text
    • https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_63b4a82df01f457db34c2f123c51b00c.pdf?index=trueIn PDF document text
    • http://luselobek.epizy.com/5811353619.pdfIn PDF document text
    • http://fukasutatota.rf.gd/mimozebo.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_off0000e713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE713 4612 bytes
SHA-256: d2e9249ebb9d230ab6d4f3f1983c28a60e1a19697a0a78236871977a2820599c
font_01_sfnt_off0000f691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF691 10740 bytes
SHA-256: ac9d4f4151c33374d7bd4f7e9c9b9f52377774b54202da418640c5e0e0b50262
font_02_sfnt_off00011b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B74 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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