Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcba2fa79aa4fce6…

MALICIOUS

PDF

68.2 KB Created: 2021-02-17 20:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6229a11879a3af7f414ae5c457067bd5 SHA-1: 4b498aabba634289dcf084c64be3e1952cec7fd0 SHA-256: fcba2fa79aa4fce6186b8a991dbf469b1f3697110684094a25423ad5725d1f21
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://leonvi.ru/wix?keyword=the+age+of+affluence+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447263/normal_5fe9cd8361047.pdfIn PDF document text
    • https://cdn.sqhk.co/momogajopi/87Eifwy/new_york_travel_guide_book_by_mail.pdfIn PDF document text
    • http://loveantravel.xyz/codigo_premium_brasfoot_2020_celularv539t.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/tudozigula_simoxovuwuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482206/normal_5fe82fbf8f9f3.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/dRzcnhc/learn_english_grammar_step_by_step.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469355/normal_5ffa95d73018a.pdfIn PDF document text
    • https://jirakeleda.weebly.com/uploads/1/3/5/9/135992973/9698118.pdfIn PDF document text
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/f7b0d198db13c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370071/normal_5ff7e5ae67c30.pdfIn PDF document text
    • https://cdn.sqhk.co/gitogozune/jbaidic/diy_garage_golf_hitting_net.pdfIn PDF document text
    • https://tamunalu.weebly.com/uploads/1/3/3/9/133999965/jojesisube.pdfIn PDF document text
    • https://zedemozotazodi.weebly.com/uploads/1/3/0/7/130776451/f4456d713bae6.pdfIn PDF document text
    • http://freshnatur.fun/cccam_2._3_2_openatvqei9p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ced1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 5024 bytes
SHA-256: e734af031906aaa0dbd6ae36e213a6243dc5fb933935acf9f900487004ca8930
font_01_sfnt_off0000dff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF6 10596 bytes
SHA-256: ff600a00c49cfba836430516e5304b738e51ea1a7397ea8c88da4cce83575af9