Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0affec8b8cca47…

MALICIOUS

PDF

61.3 KB Created: 2021-03-09 12:53:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 226beb1f6bbb2a6d7c53e8bf4385c74c SHA-1: 09ea1f8e180e2252da66858981a9189e11241294 SHA-256: 5d0affec8b8cca472b10a0d3bf73aa62f2bb234d98f551de0c0fc9e4c903bbe3
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 0.8681

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://jottigo.ru/award?keyword=53+libros+apocrifos+en+pdf PDF link annotation
    • http://natiral.space/zenonia_5_unlimited_stats_and_zen_apk41x3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451348/normal_601fdfc43646b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385424/normal_5feebe590c488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_603e86f7c7661.pdfIn PDF document text
    • http://tehnotop.space/5047323439pqesf.pdfIn PDF document text
    • https://tovibibuxajewen.weebly.com/uploads/1/3/5/9/135968099/6912333.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445115/normal_6029a935505e7.pdfIn PDF document text
    • https://nagejezesalu.weebly.com/uploads/1/3/0/8/130874580/2542607.pdfIn PDF document text
    • http://trend-sales.fun/gamamijukokulipoj6byhm.pdfIn PDF document text
    • https://pabimoju.weebly.com/uploads/1/3/3/9/133997489/bamoxemomojokeki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_60286e755e4e4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db086bda-fa5d-436f-a30c-9ac0fd59008a/what_sauce_goes_on_dominos_philly_pizza.pdfIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_171f094fd7b6406a9c345c5cac432a0d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dc2b484-4642-403d-90ea-28b576052df4/suruxeroxo.pdfIn PDF document text
    • https://2a4c341d-9af7-4f89-b48a-1b926ad6ced7.filesusr.com/ugd/dd6616_99900efd905b4fb58f8538743c33de8e.pdf?index=trueIn PDF document text
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_be6ed3d1d2864ceb9074f307111b21ae.pdf?index=trueIn PDF document text
    • https://81d89a68-18ac-4cf1-ad00-ddd5d2f7da41.filesusr.com/ugd/ed58ef_95c8367da76b4c9f909d51ccfc711122.pdf?index=trueIn PDF document text
    • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_22dd098e6ff747a1b90b7e05a1d48169.pdf?index=trueIn PDF document text