Malicious PDF — malware analysis report

Static analysis result for SHA-256 3253042b657aa8f7…

MALICIOUS

PDF

68.9 KB Created: 2021-02-23 19:27:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a69c9fb075c0baff42f3f000d52ffc05 SHA-1: 0da557f34cd4e236e6650f74164b9b426eb181b7 SHA-256: 3253042b657aa8f7b01556d573d9bbba63df2bfcbb57cf112e8728eeeec372eb
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=how+to+wirelessly+connect+brother+hl-2270dw In PDF document text
    • http://kieverts.xyz/creamy_togarashi_sauce_recipevk32w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_601549a9dea73.pdfIn PDF document text
    • http://urologo.store/98365208066z3gv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450356/normal_5feba11cf3f1b.pdfIn PDF document text
    • http://nibelv.xyz/thank_u_next_zip19hoy.pdfIn PDF document text
    • http://carinsusa.info/emiway_songs_videod9gff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411682/normal_5ffb0a4610297.pdfIn PDF document text
    • http://idealica-it.website/zidavaxedasaruxumuvamudag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_60304cae03e39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393772/normal_6033e5296f148.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jadere/6072838328.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/49352512399.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/broadcom_drivers_for_ubuntu.pdfIn PDF document text
    • http://notijukigexu.rf.gd/zolegepamelixadubum.pdfIn PDF document text
    • http://zezazemana.epizy.com/via_dolorosa_violin_sheet_music.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_off0000ce46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE46 5496 bytes
SHA-256: e352a820c93d5ff1bab2ad0c26e8bb27908fa10e44cac4b87520c015f1a4ad5f
font_01_sfnt_off0000e116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE116 10936 bytes
SHA-256: 9952d03182e45fa9f0aa30dac726abbf36e18af919bbd4b6acfd07b1b97a3b7f