Malicious PDF — malware analysis report

Static analysis result for SHA-256 4721d7544b79f4b7…

MALICIOUS

PDF

73.0 KB Created: 2021-02-19 21:10:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 31c37d51d9cf400c590325279c16ea54 SHA-1: 82c950059f9896cd7d30740f84585dd3a3316a16 SHA-256: 4721d7544b79f4b7e40824516296a3f63f6eec05bb7ece4050a5e46992ea093d
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://bologen.ru/wix?keyword=vine%2527s+expository+dictionary+pdf PDF link annotation
    • http://faceskinagainbeauty.xyz/best_worship_songs_2020_mp3_downloadlwuwo.pdfIn PDF document text
    • https://vopobibipudo.weebly.com/uploads/1/3/4/6/134620476/d20c4d34.pdfIn PDF document text
    • http://autocredit.moscow/37887403347s8hy9.pdfIn PDF document text
    • http://watertea.space/notes_app_for_iphone_not_workings8g0w.pdfIn PDF document text
    • https://tupokigefadewun.weebly.com/uploads/1/3/4/7/134702618/ec01285ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387427/normal_5ff5e7cf7bbe5.pdfIn PDF document text
    • https://wexotagupoma.weebly.com/uploads/1/3/2/8/132814474/ketegozavepona-wanenivovowof-xarejirukaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_602f15dd015ed.pdfIn PDF document text
    • https://nasipowo.weebly.com/uploads/1/3/1/3/131383467/592568.pdfIn PDF document text
    • http://shoop-fm.ru/8683851133ngg4.pdfIn PDF document text
    • https://mululugasafes.weebly.com/uploads/1/3/1/6/131636627/1038864.pdfIn PDF document text
    • http://barbanapoli.moscow/vince_gironda_6x61irl1.pdfIn PDF document text
    • http://help-verification.com/financial_reporting_standards_for_malaysiajoym2.pdfIn PDF document text
    • http://kernig.store/jusakisetajezpxvrg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382423/normal_5fdd44f817e60.pdfIn PDF document text
    • http://select-get.top/novifuwexebutowifukolt6gkj.pdfIn PDF document text
    • http://italysummer.space/vimokuribemezafulimuxu56nxa.pdfIn PDF document text
    • http://ketosimple.online/create_custom_popup_menu_androidmla7o.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/pidufozu/solar_system_formation.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_off0000e113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE113 5288 bytes
SHA-256: cd143d0a300843bb23e06d60ed0eb9bc635fb3b6d8f43d6fa0763644f2773026
font_01_sfnt_off0000f337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF337 10304 bytes
SHA-256: 453f89fef2cd5ada2782e550e735c1c4bf30b7c7c52d182b899aa7e7666cdd68