Malicious PDF — malware analysis report

Static analysis result for SHA-256 67cf3da679d49a04…

MALICIOUS

PDF

69.2 KB Created: 2021-02-22 00:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 858f4c293bf507f8d4873a2bb7b839c0 SHA-1: 484e0df9f45ac04fe1a54a98b94aa28813ced90d SHA-256: 67cf3da679d49a04e21ec9774bec833d16e12ebedc0357527fa41cb8124bd2ba
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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/wix?keyword=the+battle+cats+hack+apk+2018 PDF link annotation
    • https://cdn.sqhk.co/xuxozowaki/hOJgjKa/zemefelafemajekezade.pdfIn PDF document text
    • https://cdn.sqhk.co/tifatuju/hMgdgg8/blue_apron_thanksgiving_meal_kit.pdfIn PDF document text
    • https://wipemaxo.weebly.com/uploads/1/3/5/3/135345075/pasemofi-kudeginurunox.pdfIn PDF document text
    • https://baxopaparoxiw.weebly.com/uploads/1/3/1/4/131454316/subufuxisima-mesoz.pdfIn PDF document text
    • https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/vogidozidegubu-jeteropun-woxopizaxaka-tiworedofu.pdfIn PDF document text
    • https://dekitinuro.weebly.com/uploads/1/3/4/8/134871397/mafesenenuki.pdfIn PDF document text
    • https://dejegudiferu.weebly.com/uploads/1/3/1/8/131857494/visazu.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/c8hc0kq/digital_strategy_proposal_example.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/6897371.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fofogagad.epizy.com/26944655545.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/consumer_report_best_washing_machine_2018.pdfIn PDF document text
    • http://vogidide.epizy.com/management_discussion_and_analysis_report_2016.pdfIn PDF document text
    • http://zotuxegusam.epizy.com/levabavalaronoxufu.pdfIn PDF document text
    • http://robowogutalopet.epizy.com/effortless_english_ebook_free.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_off0000d2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A6 5600 bytes
SHA-256: c1d8c400fac7096a28c0f60148d64ba9e6417bc4a4e7d4bc4bc95fce6d91bf2b
font_01_sfnt_off0000e5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B0 10140 bytes
SHA-256: f08e0c443029adb3e8f4d3a0db90dce9c91b08eef394b2dfdae10b0a3edc4f64