Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea23ae22456da1cc…

MALICIOUS

PDF

69.4 KB Created: 2021-02-16 04:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0648f2e2e1860b51900c4971500b2a44 SHA-1: 35654eef8644bdfe8c952a30d5cc4831ba73d4fc SHA-256: ea23ae22456da1ccb6d13d3e645605e259ab7bb38bd30dcbfb9b39b93f87d9c9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=irobot%20roomba%20i7+%20black%20friday%20sale PDF link annotation
    • https://xatiletovolut.weebly.com/uploads/1/3/1/4/131409128/74bd2da0fefe687.pdfIn PDF document text
    • https://jumolixebeze.weebly.com/uploads/1/3/4/3/134352805/vozolobumibu_xaridixigir_givavuzurawoja.pdfIn PDF document text
    • https://cdn.sqhk.co/nufuwijili/jjNTlhf/56422144696.pdfIn PDF document text
    • https://rarejiwu.weebly.com/uploads/1/3/1/6/131606055/nenos.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/6760857.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/JXjfXGt/novel_sky_president_substitute_wife.pdfIn PDF document text
    • https://juwexulomo.weebly.com/uploads/1/3/4/3/134385858/6547146.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarasam/CzZLhcG/lexia_reading_core5_login_online.pdfIn PDF document text
    • https://jejipabiximi.weebly.com/uploads/1/3/2/7/132741556/9584501.pdfIn PDF document text
    • https://somokowu.weebly.com/uploads/1/3/1/3/131383604/pekizewu.pdfIn PDF document text
    • http://jetelijunejuk.iblogger.org/equivalent_fractions_worksheet_year_2.pdfIn PDF document text
    • https://bugomalaked.weebly.com/uploads/1/3/5/3/135324661/jakizipako.pdfIn PDF document text
    • https://gonagulinifuf.weebly.com/uploads/1/3/1/8/131856247/vomopofinutixunonuzu.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/wapabefizosumi/alpolic_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/2058148073.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_off0000cf1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1F 5492 bytes
SHA-256: 5e6400c78cbe197afd8bb099c7d6c81279a2b278d219a82638ec09035e50807c
font_01_sfnt_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 11484 bytes
SHA-256: 5134fa5934a30e21a754dd15112878ec5091ff9e18ca9578a359e57be21d41f5