Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee0534417a4e7f54…

MALICIOUS

PDF

65.1 KB Created: 2021-06-06 18:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 55cf46c75fb1a631009728d97a87bfe6 SHA-1: 1ec4198888d747083652674cbd372a909e0910d9 SHA-256: ee0534417a4e7f54ed30cf6e7ee54c19f69009009c6be8c84ca1a4b414650e25
184 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5247

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://nomylo.ru/pbw?utm_term=how+to+brace+your+abs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387233/normal_5fe09e31a7d20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419235/normal_60329e23b4cf5.pdfIn PDF document text
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/kawowijufaj_kexavezodavataj_tajupufow.pdfIn PDF document text
    • https://fobedixosofano.weebly.com/uploads/1/3/4/3/134377241/riwifevito.pdfIn PDF document text
    • https://donaleta.weebly.com/uploads/1/3/4/4/134481941/nujej-puxigopozid-kimofusurej-sabagusoletita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_60371fc52d3e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379233/normal_5ff6767c5bc81.pdfIn PDF document text
    • https://wivewuti.weebly.com/uploads/1/3/4/6/134698804/b0d8e9af9e774f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416139/normal_603bf04286f25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410714/normal_6029c90e6899f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475406/normal_600ae389f1aee.pdfIn PDF document text
    • https://wuwonemuv.weebly.com/uploads/1/3/4/5/134589345/1501882.pdfIn PDF document text
    • https://rereviraret.weebly.com/uploads/1/3/4/5/134512362/bowuwis.pdfIn PDF document text
    • https://fakunusubef.weebly.com/uploads/1/3/4/7/134742209/pogixikagaka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475212/normal_5ff9de11e6800.pdfIn PDF document text
    • https://sutopudebesi.weebly.com/uploads/1/3/1/4/131438093/8937690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403816/normal_5fd6fb0aaf7ae.pdfIn PDF document text
    • https://figiroxofidun.weebly.com/uploads/1/3/0/7/130740151/6148413.pdfIn PDF document text
    • https://magazeja.weebly.com/uploads/1/3/5/9/135990405/5282433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_6035f5b30ce42.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c55114ef-8dc6-4a4a-b3a1-dbf16c97784c/tofumalebemakuzijawakumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8959793e-fe8e-4399-bbe9-2ba2a88bc33f/oster_steamer_5711_rice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69752ba7-e2f8-4bd5-a25c-4351b06bc0f3/canon_speedlite_430ex_ii_display_flashing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2985b329-6bc3-4fda-a284-74793e1435dd/3770931609.pdfIn PDF document text