Malicious PDF — malware analysis report

Static analysis result for SHA-256 575e2130ef5f462f…

MALICIOUS

PDF

44.3 KB Created: 2021-03-23 18:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2a00b1d9d070ec39fc021bb1d15d3f7f SHA-1: f2c8ad4ea2be90d9efc52ae86f7800e19d0a9edd SHA-256: 575e2130ef5f462f82564bb8053d2a8865be8d393803f96fc5ed0ac738ff5aab
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, identified as a link farm. Several heuristics indicate this is a non-clustered link farm on disposable hosting, with one URL pointing to jumiwimov.ru. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The primary function appears to be directing users to other potentially malicious or SEO-manipulated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7971

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 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
  • 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://jumiwimov.ru/award?keyword=saklaw+ng+retorika+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497646/normal_60278e5a79825.pdfIn PDF document text
    • https://jileninaniwepuz.weebly.com/uploads/1/3/4/7/134771173/gazadenegav_buwumo.pdfIn PDF document text
    • https://dixamagajo.weebly.com/uploads/1/3/4/6/134652312/tibedaratugegozu.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/66974661788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491686/normal_6025c634a82e0.pdfIn PDF document text
    • https://vofitusu.weebly.com/uploads/1/3/5/3/135301199/joneginekazara.pdfIn PDF document text
    • https://zorisurirumu.weebly.com/uploads/1/3/4/6/134600588/7ab28.pdfIn PDF document text
    • http://siwosupegejolop.medianewsonline.com/the_crown_on_your_head_text.pdfIn PDF document text
    • https://rinadulig.weebly.com/uploads/1/3/0/7/130739308/9436829.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/how_to_report_cohens_d_apa_style.pdfIn PDF document text
    • http://fekevopimibun.sportsontheweb.net/58980673564.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462775/normal_5ffe747092734.pdfIn PDF document text
    • https://vakikuxikedeti.weebly.com/uploads/1/3/5/3/135320305/siser-xasimolusaf-puwodedi-fakafufu.pdfIn PDF document text
    • https://zokolukesowi.weebly.com/uploads/1/3/0/7/130776120/pikexev-biwunejemoroso-vabaw-xotip.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/dufakelezenomesixavuwexog.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/85582044390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/383e1452-2af7-48c0-b9d7-350948451814/why_do_i_have_a_red_bald_spot_on_my_head.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/sejeku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/555c99f8-2280-4525-bc7f-8d04ebfa502b/puvesamoromaxov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea983543-6db6-49e3-8f25-89871dcddafb/define_corporate_identity.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/58212559499.pdfIn PDF document text

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