Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4a34a586ad88558…

MALICIOUS

PDF

69.0 KB Created: 2021-02-09 16:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73b5b9f9b3a581ab2c106222b8f0325a SHA-1: 7c5202d90b65cb227d74ace85689ff425f480c02 SHA-256: e4a34a586ad8855856db542bfb5296cc3913ab56ccf4a647393a8025870aa77a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/aws?utm_term=cinderella+2015+soundtrack++rar PDF link annotation
    • https://cdn.sqhk.co/nasanoroge/90Q0J9n/janovulefuvotumesenonun.pdfIn PDF document text
    • https://fotawadibegul.weebly.com/uploads/1/3/1/1/131163643/rinikelokeriri_siderobag_japoku_zefodoku.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/a42G8gf/p_bandai_pre_order_usa.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxubefe/eifheia/jolirosixigotowatizipugu.pdfIn PDF document text
    • https://serekarivevug.weebly.com/uploads/1/3/1/4/131407867/2e999b34.pdfIn PDF document text
    • https://cdn.sqhk.co/kefekawit/lt4Tjge/fancy_names_for_colors.pdfIn PDF document text
    • https://cdn.sqhk.co/rurokusulos/jdMyhdr/space_invaders_movie_trailer_1990.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465262/normal_600a0e4f88d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468289/normal_601ab8977780a.pdfIn PDF document text
    • https://vezudarelewik.weebly.com/uploads/1/3/1/4/131482962/sajobozepa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366976/normal_5fc9e6d8413a6.pdfIn PDF document text
    • https://pejilajapife.weebly.com/uploads/1/3/4/4/134477767/pubepaleviso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492246/normal_5fcf44cf40606.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/pululusodogi/criminal_justice_reform_jobs_seattle.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/66705191913.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_off0000ca19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA19 5352 bytes
SHA-256: 24f88dce5b57bada7a92d9781eee3978f7f2bdc21038ef3d97706785ebb4aa12
font_01_sfnt_off0000dc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5D 13352 bytes
SHA-256: 4dd593ffea0419ead7b27785069ed63201e442a96c7a4c7d4f5d38c36f27b042