Malicious PDF — malware analysis report

Static analysis result for SHA-256 492c9b3c24783fff…

MALICIOUS

PDF

50.6 KB Created: 2021-03-25 15:35:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a38a5a9bd010267b3e108edec6a29d77 SHA-1: 3fdf2856c4e5544de553e88b943e19fd5dc9aa1a SHA-256: 492c9b3c24783fff56fd3ba4f027715110a4600a9e882a51b51dd93474c256b1
184 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 0.9372

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://dugedepap.ru/strik?utm_term=how+data+mining+is+used+in+healthcare PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5fc6504660a86.pdfIn PDF document text
    • https://cdn.sqhk.co/wanazofemuvu/iPigLhi/marshmello_helmet_plastic.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/asigJXc/xajififukimaxeza.pdfIn PDF document text
    • https://cdn.sqhk.co/xetorexevapi/KgYjjic/ziwonatibopu.pdfIn PDF document text
    • https://cdn.sqhk.co/wukufazujuv/ogN6Cia/56300752295.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/poXpfih/dining_room_chairs_set_of_4_brown.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CsaOhdD/77800013952.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/ij2X7hf/air_soccer_ballon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386593/normal_6013ed4ccc4cf.pdfIn PDF document text
    • https://ececae0b-1312-4a4c-959a-117928b3d478.filesusr.com/ugd/e6721e_f53a5ea5672f430a94d8b6b02e2bacbb.pdf?index=trueIn PDF document text
    • https://12c48f50-3553-44c7-a31c-19fc5df83d07.filesusr.com/ugd/7e0eb0_81d9247d06ed4e489836c42c63b0ee9b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bulozor/book_thief_movie_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/fincen_suspicious_activity_report_electronic_filing_instructions.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_ead8750b4b0d4d709fca1098abd9780e.pdf?index=trueIn PDF document text
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_63ffdf4fe0de45edab710ef486558ae8.pdf?index=trueIn PDF document text
    • http://xomufulikade.epizy.com/autocad_plant_3d_2020_for_designers.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/91672891528.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/jepinamopejovofulovotima.pdfIn PDF document text
    • https://d046670e-94b8-4ea2-8efc-69fca9b502c9.filesusr.com/ugd/c0b427_e9175e56a12940c395cd124df860c812.pdf?index=trueIn PDF document text
    • http://vujujejinegu.rf.gd/98543599264.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/c_language_programs_questions_and_answers.pdfIn PDF document text

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