Malicious PDF — malware analysis report

Static analysis result for SHA-256 7487b82672bae1b7…

MALICIOUS

PDF

143.8 KB Created: 2021-03-23 18:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 801d61b6801b6fccf40d3c7a11652827 SHA-1: d1ff5f1ac967ff91f13008b0aa2be9d8a8e9f3c0 SHA-256: 7487b82672bae1b7c2ee430663caa3f89d78c57e6997aa6f2b0447c9d647a3d4
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a search result for a song. This indicates a phishing attempt to direct users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/123?utm_term=vande+mataram+song+in+tamil+audio PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413117/normal_60177ede36969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fda630c73015.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/how_to_multiply_and_then_add_in_excel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455387/normal_60599059b643f.pdfIn PDF document text
    • http://raponikidosal.getenjoyment.net/87647187275.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_60011e8767b4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5fde02bcd8846.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://uploads.strikinglycdn.com/files/558daa8b-9ea2-433a-8844-74812c87c127/briggs_and_stratton_450e_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3aa3536c-05da-4da1-a0c4-7cfc3f8f191a/jeju_olle_trail_guidebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/403f71e7-e912-474b-a8e6-81986c924d11/zeriguvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e873307b-7685-4c31-8112-81272b4e0ea7/mimusirobasegaj.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/grr_anova_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/sunshine_act_compliance_aggregate_spend_reporting.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/laminating_cleaning_sheets_kmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f8bf521-53fb-4813-ad3a-af1d476eb9e4/77535592713.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/92707606234.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/buy_android_tv_box_australia.pdfIn PDF document text
    • http://molujafit.atwebpages.com/58560053918.pdfIn PDF document text
    • http://baxewape.myartsonline.com/nekaxovolozememusimivuwi.pdfIn PDF document text
    • http://feferabi.atwebpages.com/tezolubaxamojofuwaputi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b79db39-76b3-41b3-b6d6-7030e470654b/star_citizen_roadmap.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_off0001ef31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF31 4992 bytes
SHA-256: 19f41a7bf6e24f2e9f5ff2908006a21ccc18e4f3ac1dc4f9969dd50a7bfd98ea
font_01_sfnt_off0002000e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2000E 10768 bytes
SHA-256: eb5213db82cb08057cbbec2006255e3d4becf2caa825cc381a426e13644d230f
font_02_sfnt_off000224bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x224BB 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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