Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf96be0a4828c3a…

MALICIOUS

PDF

57.6 KB Created: 2021-05-10 14:53:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: d8c31a80056f4660205014366d826c2b SHA-1: 64918ca75b6aac95709694f51bbeb4353acfae9b SHA-256: 4cf96be0a4828c3a7bf2d7fdbd415173100257d1b7cd20f3431ed7faf3560437
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, appears to be a lure related to a 'Disneyland map 2020 printable'. The presence of PDF_URI and PDF_SEO_LINK_FARM heuristics strongly supports the conclusion that this document is part of a campaign to drive traffic to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8335

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://pelibifir.ru/strik?utm_term=disneyland+map+2020+printable PDF link annotation
    • http://togurebuk.66ghz.com/girl_laughing_sound_effect.pdfIn PDF document text
    • https://zujituxo.weebly.com/uploads/1/3/2/6/132681889/3462253.pdfIn PDF document text
    • https://vatuwogumim.weebly.com/uploads/1/3/4/6/134605764/1962726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378386/normal_60054f04cfa16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426059/normal_600efccff1e92.pdfIn PDF document text
    • https://dalideno.weebly.com/uploads/1/3/5/3/135384103/zofoxukefa.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/fgh3chi/lezegazesaxibiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471946/normal_601f956346050.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501509/normal_5fff244ea34e1.pdfIn PDF document text
    • http://pejagepelif.iblogger.org/guzojezuju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503390/normal_600aec4f9eb4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402261/normal_606adec51dcd3.pdfIn PDF document text
    • https://vijejomikozo.weebly.com/uploads/1/3/4/6/134668467/xegavomunobuga_ruliweraserexi_vilofetiwojaru.pdfIn PDF document text
    • http://mudikovarew.mygamesonline.org/ryan_ielts_writing_task_1_academic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_6057fdefc2308.pdfIn PDF document text
    • https://josabinisepev.weebly.com/uploads/1/3/1/4/131452942/giriwosusurof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_6044fc4f8e82e.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/68909234920.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/aijgg1p/bootstrap_slider_free_w3schools.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459035/normal_6017b1af0c3e3.pdfIn PDF document text
    • http://bolirazebaf.myartsonline.com/reluwowaj.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/31735707378.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/lesanurevudebadikepagobul.pdfIn PDF document text
    • http://nokefibazapowem.rf.gd/7846694417.pdfIn PDF document text

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