Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67822fac6c313ca…

MALICIOUS

PDF

69.3 KB Created: 2021-02-23 03:38:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 268141e56ff2da781f49c019deafc387 SHA-1: c5dac1205bbb465ef1031c4900c7d939c83a03a8 SHA-256: c67822fac6c313cafbbdbac587e765b9e47b185d918b919be3ea4b60d5da1355
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=isoquant+and+isocost+curves PDF link annotation
    • https://cdn.sqhk.co/jisepozidis/tZidaI5/rocket_launcher_ark_code.pdfIn PDF document text
    • http://nakanilo.club/ideas_for_bridal_shower_sheet_cakes5galt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385198/normal_5fdfc2efc7717.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418558/normal_6034297cbafab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464702/normal_5fffd2942f8bb.pdfIn PDF document text
    • http://about-igsupport.com/soferapixirabatnq7ea.pdfIn PDF document text
    • http://ig-copyrightviolation.com/libros_de_magia_negra_antiguosi6f0a.pdfIn PDF document text
    • http://vereffka.xyz/47015779656dwx5f.pdfIn PDF document text
    • http://rastet-malysh.ru/24701539856u4wrr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418556/normal_5fde65f6eaca7.pdfIn PDF document text
    • http://opt05.ru/pelojxcukb.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/minabiwa/aditivo_plastificante_para_concreto.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/24229772466.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/nosore.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_off0000d483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD483 5024 bytes
SHA-256: 1cb5636612b13470c0ef7c9d74e1dc30edce0d3f182dc8d10a721e99a6da4d9f
font_01_sfnt_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 10080 bytes
SHA-256: c8c87a9f3cac008afe52f61e5a416c771d912518c772bf3b4a57764378bc8d76