Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5247f09c3c48cc…

MALICIOUS

PDF

70.6 KB Created: 2021-02-28 05:43:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b9122201156ac12c990a4be693da58c5 SHA-1: 8e84d2dc88b61bde4a4c5c3ea193c9bd694b0508 SHA-256: 9a5247f09c3c48cca8377689e906a2aca786cab5e40a551da0a3332756e95f9f
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/award?keyword=epiphone+les+paul+special+ii+wiring+diagram In PDF document text
    • https://cdn-cms.f-static.net/uploads/4465393/normal_5fe6b29ede136.pdfIn PDF document text
    • http://putinoid.ru/vugalowumofanilazuraknoc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391925/normal_5ff7120eb85de.pdfIn PDF document text
    • https://cdn.sqhk.co/bemapebe/cdqijfy/bevamobolenutizadoxaro.pdfIn PDF document text
    • http://amsidgi.xyz/27183237236kqc8p.pdfIn PDF document text
    • http://raifaisentgo.online/what_is_chemical_weathering_caused_byutp24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406228/normal_6032ccd06a877.pdfIn PDF document text
    • http://setofexperience.site/mogexikerivatixewuwzojo.pdfIn PDF document text
    • http://sayseedokg.com/128211343254d5b5.pdfIn PDF document text
    • http://legalvictory.group/bakasana_information_in_marathioa42y.pdfIn PDF document text
    • http://vududodudo.22web.org/kupetidavamuretegi.pdfIn PDF document text
    • http://hhizmet.com/3081635835745jd7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vifidunut.epizy.com/pubg_emulator_for_2gb_ram_laptop.pdfIn PDF document text
    • http://ratudafoxivux.rf.gd/gejawifidabozulez.pdfIn PDF document text
    • http://pisatetakedabak.epizy.com/xafawanoboteberugepef.pdfIn PDF document text
    • http://vaforapibasaw.epizy.com/70733080107.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_off0000d779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD779 5536 bytes
SHA-256: 705a82abfc3d8b91dc4fc7f00e0e1b88c191d94e6089987f4f470e77e7d94c2f
font_01_sfnt_off0000ea36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA36 10196 bytes
SHA-256: aedb9acf8d612090869789364be916f672d23a5bc1c4c12d0b1d0a035f06c13c