Malicious PDF — malware analysis report

Static analysis result for SHA-256 816e8282fea6eba9…

MALICIOUS

PDF

78.3 KB Created: 2021-03-02 18:15:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e4291bf2a15c6493d3fec50481fb3c8e SHA-1: 852efaa3f6a254ed6bab14aaeadc7f9c9250d032 SHA-256: 816e8282fea6eba91cf9f61bd5e80066200611410ce15cbb7f425162a8f13769
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=how%20much%20does%20a%20new%20electrolux%20vacuum%20cleaner%20cost PDF link annotation
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/ccf2510980c4d3d.pdfIn PDF document text
    • https://giliruba.weebly.com/uploads/1/3/1/4/131483170/fetepudogeda.pdfIn PDF document text
    • https://gipasutojemozup.weebly.com/uploads/1/3/1/3/131379868/fujivodevam.pdfIn PDF document text
    • http://cetapp.xyz/orpheus_and_eurydiceplhrf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377656/normal_6033448f95d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486969/normal_603e2ded3317d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fe66e4f32602.pdfIn PDF document text
    • https://puxonuge.weebly.com/uploads/1/3/1/3/131383548/rojawuv_setanerofus_jojejelumaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494440/normal_6028861a6245a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385848/normal_602a4780bfbb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fc712396322a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371543/normal_6027455a5d081.pdfIn PDF document text
    • http://sodalabs.pro/kindle_fire_hd7_4th_gen8s35q.pdfIn PDF document text
    • http://dresdenpharma.ru/movies_free_download_in_utorrentob40u.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pevajaxujob.epizy.com/doofenshmirtz_inator_meme_template.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_off0000f41f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41F 5360 bytes
SHA-256: 7e39f92c9452815f5d138729ab8c67ec82c3a1b6d3af6a74eb21723e325ce943
font_01_sfnt_off0001063d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063D 11152 bytes
SHA-256: 1a7d3156c6a178e96b3d3582ec40671666527dd62d1083506b68a2f7fb5f4138