Malicious PDF — malware analysis report

Static analysis result for SHA-256 43df9a73bf08acbb…

MALICIOUS

PDF

78.7 KB Created: 2021-02-15 05:32:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: faca8ef7e709370a1813286a15f1cfeb SHA-1: 6d5a30809416e8b301334f86e0163a69b9ef68e7 SHA-256: 43df9a73bf08acbb3ab6b8d21191557242ff4089ab17562003cfdb016e5c7d13
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/123?utm_term=5e+intellect+devourer+polymorph PDF link annotation
    • http://idealica-official-it.website/17170430480ax33.pdfIn PDF document text
    • https://cdn.sqhk.co/gisanewat/cigjj2z/44251139203.pdfIn PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/miwekupeni.pdfIn PDF document text
    • https://biwawabagukolaz.weebly.com/uploads/1/3/4/7/134730268/f3da063e5867.pdfIn PDF document text
    • https://rejasujewefem.weebly.com/uploads/1/3/0/7/130738882/pitomed-fagewavede-jiwise-pokapirowe.pdfIn PDF document text
    • http://thelandofbadideas.com/nupovarenokamosowafixosisiltv7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_600c7cafe9238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458837/normal_6017ccbbd143f.pdfIn PDF document text
    • https://cdn.sqhk.co/venitalobeni/jiieUBV/kosibe.pdfIn PDF document text
    • http://vorecan.space/viral_news_urdu_breaking_newslykwt.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/fotojipifuzitul/bluestacks_2_setup_file.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/3139407108.pdfIn PDF document text
    • http://kezasifofajimo.rf.gd/calpers_457_distribution_request_form.pdfIn PDF document text
    • http://pususarejopo.epizy.com/green_smoothies_for_life_recipes.pdfIn PDF document text
    • http://setiwol.epizy.com/nepikoxosanipiviwale.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_off0000f3fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FC 5116 bytes
SHA-256: b42635fd9946865f082065be0f2ccce453c786943a2fb686710194b6428b091a
font_01_sfnt_off00010544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10544 12360 bytes
SHA-256: bc3899e852ad00ebd3c57e8a27700a76faf9507eb2bb81edafdd61284d092eec