Malicious PDF — malware analysis report

Static analysis result for SHA-256 65eea4dce045eadb…

MALICIOUS

PDF

66.2 KB Created: 2021-02-19 13:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c49f4b1debb3dbf5406899e264aaf3f1 SHA-1: c1090e7cd43a7e922924ca6ce1a193d812476c4d SHA-256: 65eea4dce045eadbb1f93b9c1262f3a99cb1bae0bb4cbb548d6a753fd3da732f
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/aws?utm_term=free+math+coloring+worksheets+for+2nd+graders PDF link annotation
    • http://br1.red/whats_the_most_money_you_can_win_on_a_slot_machine91gda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386366/normal_601db0ac7cac3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483604/normal_5fe9e1b35053b.pdfIn PDF document text
    • http://zejufixapoferu.iblogger.org/72775525880.pdfIn PDF document text
    • http://2022god.com/3289472669396b20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483608/normal_6004e9be243c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486550/normal_5fec9548c4393.pdfIn PDF document text
    • http://varnisvakq.ru/20432668308kfmpo.pdfIn PDF document text
    • http://rukozhop-guide.com/27583953724q1bne.pdfIn PDF document text
    • http://kinokaiff.space/lupuxote0s915.pdfIn PDF document text
    • http://lalat.space/counting_worksheets_for_2nd_gradeta6kx.pdfIn PDF document text
    • http://netzamka.ru/37153081977dpno3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5fd80726388a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kudogal.rf.gd/nopimixavasoro.pdfIn PDF document text
    • http://jezawirigi.epizy.com/what_qualifications_do_you_need_to_become_a_first_responder.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_off0000c7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C6 5676 bytes
SHA-256: b5a5a0d52b99896f58f3382f8e4936be369727e278a42f1f67e4c0bb87630cbd
font_01_sfnt_off0000daf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 9620 bytes
SHA-256: d7a416896e3e1c1cd7bfa264b769ae497b90ba2bc79baa30d5b86a362fe18669