Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5cfaa349a18155…

MALICIOUS

PDF

71.2 KB Created: 2021-02-24 19:25:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6780ba1e64f13f7f3d9480a5832cb09a SHA-1: e4e6140945dfb6d21660bb5db54265b545a90592 SHA-256: 5b5cfaa349a18155bcb8a72392f563d9d02fc25b0469e1d936f8144495a7d43b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=chambers+county+tax+office+anahuac+tx PDF link annotation
    • http://kirakexig.mypressonline.com/dilezazizazowufo.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/56703022625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485935/normal_602d39d1414b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_6015a61a2150e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495390/normal_5ff5169843315.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477367/normal_5fda806db973c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495551/normal_5feb84f6aa59f.pdfIn PDF document text
    • https://luvidobanuneje.weebly.com/uploads/1/3/1/6/131606009/f53bdd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423732/normal_5fec954a29b11.pdfIn PDF document text
    • https://jafusakivamo.weebly.com/uploads/1/3/0/7/130739280/cb80117c.pdfIn PDF document text
    • http://desokore.medianewsonline.com/fuxaxogijolutejexan.pdfIn PDF document text
    • https://gebifafotuzuwi.weebly.com/uploads/1/3/5/3/135324040/2e9bb68c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453563/normal_60109505c6b12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443802/normal_5fcd329574a23.pdfIn PDF document text
    • http://vuvulusigi.scienceontheweb.net/cambridge_ielts_9_listening_test_3_questions.pdfIn PDF document text
    • http://vevolim.iblogger.org/6866975934.pdfIn PDF document text
    • http://filuniguwol.22web.org/bagolegexakikunope.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://raziwisubuza.rf.gd/gopro_hero_6_black_user_guide.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/scorch_trials_free_stream.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_off0000d8e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E9 5304 bytes
SHA-256: 83d9f163c36b4416045ab851829e1c5fda60f2485ce297fccd7bfe5f0c8045be
font_01_sfnt_off0000ead4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD4 10736 bytes
SHA-256: d74f19486aedd9ae606509d369373993da257c96d7ab7e0a5e69d8fa76e99dd5