Malicious PDF — malware analysis report

Static analysis result for SHA-256 730c1d93e0bc3631…

MALICIOUS

PDF

52.6 KB Created: 2021-05-17 19:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 076814514d84ac264d8faf6eec6dc93d SHA-1: 28e3f7432a38a58ab410255ecebcea6aa642f2a2 SHA-256: 730c1d93e0bc36316ce97933b35a7e296670b77d3b98f6e3a8275ee978da5221
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The document body's title, 'Why do i feel like something isn't right in my relationship', is likely a lure to entice users to click on these malicious links. The presence of ClamAV and ML heuristics flagging it as malicious further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7523

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://mezovuduw.ru/strik?utm_term=why+do+i+feel+like+something+isn%2527t+right+in+my+relationship PDF link annotation
    • http://jumufedug.22web.org/51321928048.pdfIn PDF document text
    • http://vitodibiwanezej.mypressonline.com/6152923502.pdfIn PDF document text
    • http://wagezofon.iblogger.org/dorinozabej.pdfIn PDF document text
    • http://cmb-eco.com/laxop94gyw.pdfIn PDF document text
    • http://zedanipon.iblogger.org/59966548082.pdfIn PDF document text
    • http://msertis.xyz/wuzefilibeleximutcsgu3.pdfIn PDF document text
    • http://xonigej.mypressonline.com/assam_tet_2020_guide_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2937414f-fba0-45db-bf4b-680d1099ed2f/are_casio_tough_solar_watches_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97784ba3-af14-4052-bdfc-db214fd43496/kisozaselulugonarasobekud.pdfIn PDF document text
    • https://6d4cd3b7-91e9-43ac-92b9-205473f1e50d.filesusr.com/ugd/28146e_abda7f9d5b0d47d7858f56f09a333af7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4836cb4-4068-4d2d-9180-0b3168c74000/introduction_to_statistics_in_psychology_6th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c325fc3a-cd8d-4509-8c95-63689f537b2c/joan_didion_santa_ana_winds_analysis.pdfIn PDF document text
    • http://likutolejit.onlinewebshop.net/xirajaletifegorume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82565809-66a4-4bd6-8418-e4592157ec56/vexaxox.pdfIn PDF document text
    • https://81da36f4-dec6-4bf4-836b-19ed67500659.filesusr.com/ugd/5fd5c1_d4ab470570c1442aa9b40b906913d153.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d2ed595-97e3-4d2b-b43c-545d5630c0bc/ligudutefebepofidatu.pdfIn PDF document text
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_6c2d8859b9fe4a93ac5be034822dea10.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb2e5dfb-3e8e-4031-ac93-daf81703fa54/19081107168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2bf706d-e284-40e4-9833-1b2e77cb7d7e/57075314642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc9defe9-ad10-4bc7-88e2-4a03d92fdf68/zolowadasogadejutobujomek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/337ff5fe-a576-44bd-89e7-94a5a48881f9/thoroughly_modern_millie_cast_list.pdfIn PDF document text

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