Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2707c3883ebc523…

MALICIOUS

PDF

67.8 KB Created: 2021-03-03 09:57:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 90bee04661232f32a4ff7cbf70ee444c SHA-1: 7fdfda8f14f585438cf13cc1613136c44cbe469b SHA-256: a2707c3883ebc523d9dc1a2716f127997991b3e354063f6a0a8aae737ba7c3b6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=starfinder+adventure+path+maps PDF link annotation
    • https://nogisapu.weebly.com/uploads/1/3/1/4/131453993/1181779.pdfIn PDF document text
    • https://domaruvujus.weebly.com/uploads/1/3/2/6/132683142/rinidugidunuw_kadigup_duzuvapi_wifitopeful.pdfIn PDF document text
    • http://shopmzm.site/ecommerce_logo_ideasr9o4n.pdfIn PDF document text
    • http://idealicacolumbia.site/apostila_para_concurso_de_auditor_fiscalgiydj.pdfIn PDF document text
    • https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/luwoz.pdfIn PDF document text
    • http://potenciy.xyz/kopixiwusefiletire8w9s4.pdfIn PDF document text
    • https://dewotime.weebly.com/uploads/1/3/1/6/131606762/fifujegotovulov.pdfIn PDF document text
    • https://delezebewokumod.weebly.com/uploads/1/3/0/7/130776218/dobeb.pdfIn PDF document text
    • http://leqqurint.online/430341532386dzzv.pdfIn PDF document text
    • http://piredvizhnik.com/junidefejumelotepafehxkrg.pdfIn PDF document text
    • http://afracheat4.xyz/what_are_the_four_different_types_of_rsums_brainlyrmlyh.pdfIn PDF document text
    • https://bimozasobo.weebly.com/uploads/1/3/1/3/131398313/regudofapapevak.pdfIn PDF document text
    • http://vipadminler.org/nuwetulobad5hai.pdfIn PDF document text
    • http://busurman.space/90964237221gf5ug.pdfIn PDF document text
    • https://divuvefa.weebly.com/uploads/1/3/4/7/134759037/wovopog.pdfIn PDF document text
    • http://my-favshopg.online/32005265186mdbe1.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/italian_vocabulary_builder.pdfIn PDF document text
    • https://ralugegab.weebly.com/uploads/1/3/4/8/134888835/5040747.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://disoluje.myartsonline.com/medudilibobukopilimolas.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_off0000cb3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3D 5412 bytes
SHA-256: 0db82f81dd6093c8b5ae7355f46b31814b73eae35754ca27c9df52eefcee74a1
font_01_sfnt_off0000dd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD80 10676 bytes
SHA-256: e781cf7c8f9e2f5935f9bcf25b787daf3b5f715945d3ae9716d31adce98fd6d5