Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89710aa9d1e9c76…

MALICIOUS

PDF

62.1 KB Created: 2021-02-19 16:00:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e00a7368737c515d7ab083ccb2d8b621 SHA-1: ec2144fcffee82471110afdb7ff15ceed64ec3e3 SHA-256: e89710aa9d1e9c76116f17273f3469951af572a34af9e9038c063dcb1fdacc95
136 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains an embedded URL that appears to be part of a phishing lure, directing users to a website that likely hosts further malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document's intent to trick users into believing they need to decrypt an archive, a common tactic for evading security gateways.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://bologen.ru/wix?keyword=west+hills+portal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457620/normal_5ff23bddb025d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393502/normal_5fe66ae4f11be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5fdcef909bbb6.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/gjiiOhi/bofusevibadosuzawomiloxux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_601191e6e3785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473375/normal_6021622a04f14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367952/normal_60023a6a3bc5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://surigel.rf.gd/mallard_crossing_guide_service.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.

FilenameKindSourceSize
font_00_sfnt_off0000b934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB934 4920 bytes
SHA-256: dfff08cc1d5548ccc90f2eaa24373e4a9d7868ff3b1f84bcf0186d224471bbe4
font_01_sfnt_off0000c9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F2 10096 bytes
SHA-256: ee10b3a0e1860f43a738cac86b4f789b83ec119c427d119e34561b06a2926856

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