Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9e0cc50af676e3…

MALICIOUS

PDF

50.6 KB Created: 2020-12-23 10:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 290540cfeb72265db2d84915f10f38ee SHA-1: 79d1c6edb273828eb24131fd5c02330cc58d7fea SHA-256: 1f9e0cc50af676e31e8dac47b5e09d09bbc080fd9382815d91e4065acb2f4c2b
124 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.6781

Heuristics 4

  • 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
  • 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://trafffe.ru/aws?utm_term=abc+worksheets+for+grade+1 PDF link annotation
    • https://jedozemuko.weebly.com/uploads/1/3/4/5/134596711/cfb7a.pdfIn PDF document text
    • https://zapodebas.weebly.com/uploads/1/3/1/4/131437158/6726dda5d1.pdfIn PDF document text
    • https://waziketezu.weebly.com/uploads/1/3/4/6/134648841/fepinuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475859/normal_5fb5b632b237b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5fa54e1dddab1.pdfIn PDF document text
    • https://vijilipaguwojig.weebly.com/uploads/1/3/4/8/134872157/rojasiwis.pdfIn PDF document text
    • https://pazelofigo.weebly.com/uploads/1/3/4/5/134588761/dakidetoxe_vibujolofeko_sifari.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/6480454.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/buveg-fugiluza-dojitonugaj-goweg.pdfIn PDF document text
    • https://tujonodup.weebly.com/uploads/1/3/4/7/134717107/womiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771b77ce-69f7-4cf6-9385-9a51cc287feb/unblocked_games_potty_racers_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0363b5fb-2724-4bde-84fc-6893af06df08/92062304601.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/video_converter_windows_7.pdfIn PDF document text

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