Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbf2ec8a8d3c3b49…

MALICIOUS

PDF

70.5 KB Created: 2021-02-17 15:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cf417ca28d5c6337fcef5e9ee8131eae SHA-1: d9399a8259241d30bf806b60797310825ece1104 SHA-256: cbf2ec8a8d3c3b4944c01b5cfc669f13e3ddb8c1bc07343898d95dc2e9e4b172
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/aws?utm_term=free+fruity+loops+12+download+full+version PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482623/normal_5fc7292fe7502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471109/normal_5ffa872bcc803.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448330/normal_5feaffb81dc65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_601d95ff035e8.pdfIn PDF document text
    • http://pevokepavaxe.iblogger.org/17081763508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_600e0dabc86b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://solatilexi.epizy.com/86701179491.pdfIn PDF document text
    • http://vebojikabugoxa.rf.gd/barokn_literatura.pdfIn PDF document text
    • http://tafupudininidag.rf.gd/blender_furniture_models.pdfIn PDF document text
    • http://dipijiz.epizy.com/whatsapp_for_nokia_asha.pdfIn PDF document text
    • http://lagiwugakit.rf.gd/31749339404.pdfIn PDF document text
    • http://xajalad.epizy.com/63419231015.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/86587350334.pdfIn PDF document text
    • http://vazorilumi.epizy.com/addition_worksheets_first_grade_coloring.pdfIn PDF document text
    • http://zusunikumejimet.rf.gd/nukolijotonevo.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_off0000d46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46E 5428 bytes
SHA-256: f3b85830be763ea7b73d723288659c67fbd50c37725903025c121acad9ea677b
font_01_sfnt_off0000e71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71B 11328 bytes
SHA-256: 4fd5cdbaa8d3b0c903bc37a8046712f32899d861de8fc36effd4794ef9206d52