Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9738adac2e6498d…

MALICIOUS

PDF

68.4 KB Created: 2021-02-16 13:25:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 54fb1ef3e8eb75799dad095c05ed212c SHA-1: 5bf777d145b5d7bc259ec9f7e1fddb98ddfe8f4b SHA-256: e9738adac2e6498d7a5613e5fb70d3d3ff54be70a0257e48d3062bce17f390fe
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wix?keyword=action+reaction+pairs+worksheet PDF link annotation
    • https://waduwira.weebly.com/uploads/1/3/0/9/130969623/jepudi_gepabosijevelak_tuwibuze.pdfIn PDF document text
    • http://runmasten.online/pastor_salary_guide_20206nkxy.pdfIn PDF document text
    • http://hytri.com/x6km9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408701/normal_601070a2592d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_60220a4ec8551.pdfIn PDF document text
    • https://rovibabewovel.weebly.com/uploads/1/3/4/8/134884015/5261759.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465545/normal_5fe7aa2d329b8.pdfIn PDF document text
    • http://instacopyrightcenter.com/seasons_of_war_lyricsaisok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480893/normal_6001ecc519905.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/VV7GEnC/forward_my_iphone_calls_to_another_phone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413702/normal_6027102319169.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xadamun.epizy.com/mokexoferimifaretik.pdfIn PDF document text
    • http://badisaxutut.rf.gd/motorola_moto_one_android_one.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_off0000cf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF59 5136 bytes
SHA-256: 618eb671159e50cc9fa9e7fb71e62dd9dc36c68fb189119132e5fb6e85ebcea8
font_01_sfnt_off0000e0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E0 10500 bytes
SHA-256: ce6e8dd3cf94f935c1c1aebfc2e8bbc45c82579ba6f36e6910d7ea197ac2f7a6