Malicious PDF — malware analysis report

Static analysis result for SHA-256 16d8fd56bd8bd750…

MALICIOUS

PDF

69.6 KB Created: 2021-04-14 04:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0e570cbe35dcbe913ccbed72a123c258 SHA-1: b7852d14cd4a687bbaced96cb3ec1aef4970eb82 SHA-256: 16d8fd56bd8bd75063228faf3f0ff7e83ae0f30c37ecaacf3397c36f2a1f50e8
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely to redirect users to phishing sites or malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to facilitate traffic to these external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6455

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://druttle.ru/strik?utm_term=the+way+we+live+now+movie PDF link annotation
    • http://calipshatngaccs1.xyz/81792988270b5w5s.pdfIn PDF document text
    • https://xapodopuk.weebly.com/uploads/1/3/1/8/131856257/eca74eba5c87d8.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/LDaihgh/ready_maker_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/jchageJ/rumble_strips_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/kevekelobivo/hhAijAg/ancient_roman_empire_government.pdfIn PDF document text
    • http://aycotoro6.xyz/error_code_information9rmi2.pdfIn PDF document text
    • https://fimiwopagib.weebly.com/uploads/1/3/5/3/135315251/b5ce0de938bfbec.pdfIn PDF document text
    • http://moreprodukti.com/how_to_bend_a_45_degree_offsetzpb92.pdfIn PDF document text
    • https://toxofeleziwogiz.weebly.com/uploads/1/3/1/4/131406173/6784227.pdfIn PDF document text
    • http://trackengine.host/sasuremopageboriv90gwz.pdfIn PDF document text
    • http://gakujimogudap.22web.org/givida.pdfIn PDF document text
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/11c62.pdfIn PDF document text
    • https://jitivafume.weebly.com/uploads/1/3/0/9/130969372/pijawexugubikif_fazimalebub.pdfIn PDF document text
    • https://xefinaloze.weebly.com/uploads/1/3/2/8/132814425/kejatufotitumakiguxe.pdfIn PDF document text
    • https://sabiwivilo.weebly.com/uploads/1/3/4/3/134316676/721333.pdfIn PDF document text
    • https://notebatamigoxaw.weebly.com/uploads/1/3/4/7/134715817/3f7030a8.pdfIn PDF document text
    • http://saretozegif.rf.gd/why_is_my_lawn_mower_engine_surging.pdfIn PDF document text
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_86b205e188804944867cc1feb8bece28.pdf?index=trueIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_1a997b58d6aa4d1d88840dbdb923042d.pdf?index=trueIn PDF document text
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_cb27723a215d4db48b94af10b55785b0.pdf?index=trueIn PDF document text