Malicious PDF — malware analysis report

Static analysis result for SHA-256 535b7f596ef58590…

MALICIOUS

PDF

72.2 KB Created: 2021-02-16 07:04:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 72c547a6242b5066701754d68036ef18 SHA-1: db618ef39f68c67d5045941c61eae9d0667220ad SHA-256: 535b7f596ef585900fd987e277c9fe47b4464301a46a625bd24dc50bef75b131
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=android+6.0+1+apk+download PDF link annotation
    • https://cdn.sqhk.co/rozopebak/fUgiHjg/rise_up_hamilton.pdfIn PDF document text
    • https://cdn.sqhk.co/vameduvide/hhp2hb4/famivakupesedemogi.pdfIn PDF document text
    • https://nasaperexi.weebly.com/uploads/1/3/5/3/135351481/475e9fccba038e.pdfIn PDF document text
    • http://joretuvivofip.22web.org/jumutivazekamuneka.pdfIn PDF document text
    • https://sevirisedug.weebly.com/uploads/1/3/6/0/136089940/ea3e1801603d38f.pdfIn PDF document text
    • http://tekelas.iblogger.org/oceans_hillsong_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/pidagasew/kihgh3Z/7265219937.pdfIn PDF document text
    • https://nifiwaratobiwe.weebly.com/uploads/1/3/5/3/135346776/c2926.pdfIn PDF document text
    • https://cdn.sqhk.co/lajefage/oidSn9c/54513856506.pdfIn PDF document text
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/filagimufuwe_lijemedojobav_vegevorulu_zifurijujoget.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_6013921740b59.pdfIn PDF document text
    • https://bugituwixumanuz.weebly.com/uploads/1/3/4/7/134722584/pakonet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386851/normal_5fdd658c3f781.pdfIn PDF document text
    • https://gikanirirexenad.weebly.com/uploads/1/3/0/7/130776133/sukejojadugexuxa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mekavebij.epizy.com/capacitores_smd.pdfIn PDF document text
    • http://reniwen.rf.gd/in_on_under_over_worksheets.pdfIn PDF document text
    • http://nebegekiguwipaz.epizy.com/creating_a_budget_spreadsheet.pdfIn PDF document text
    • http://zoxutuperovizo.epizy.com/venaseposikab.pdfIn PDF document text
    • http://mebexadesojixip.rf.gd/katizaboje.pdfIn PDF document text
    • http://kotopofixivu.rf.gd/average_salary_of_clinical_laboratory_scientist_in_california.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_off0000df3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 5300 bytes
SHA-256: 889361d816ac9c3562d94d51360fee61747e5aee725a4f8efef9ea4de05f9689
font_01_sfnt_off0000f171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF171 10032 bytes
SHA-256: 1b242aa1c84e77c08c8ba22c753fe302701bd506eef11334a582e2651874316a