Malicious PDF — malware analysis report

Static analysis result for SHA-256 385dc988365db1c4…

MALICIOUS

PDF

72.0 KB Created: 2021-04-16 23:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 39b9d0ba624c8aa4e4fcef6bf39da247 SHA-1: 7c94d2d5e89c3bec9028fdd31e114ede041e03ca SHA-256: 385dc988365db1c48fd81fb94f27a5c446835f8120aa337e9c96ea252cb3785b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which are part of a link farm designed to appear as search results for 'Riyad us saliheen urdu free download'. The primary malicious URL identified is https://kuzutuzo.ru/strik, which likely serves as a redirector or landing page for further malicious activity. ClamAV and ML classifiers strongly indicate this PDF is a phishing or malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://kuzutuzo.ru/strik?utm_term=riyad+us+saliheen+urdu+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476420/normal_5fced4c13c55d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_5fe8cd2358fe1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5ff298988061e.pdfIn PDF document text
    • http://vadanunagirira.getenjoyment.net/77055814392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_601816f6084f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401994/normal_6057a1fc91aa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_605d20df05a0a.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/value_chain_analysis_in_strategic_management.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/83391383976.pdfIn PDF document text
    • http://www.biharanjuman.org/hadIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/82094227498.pdfIn PDF document text
    • https://adc67df4-9ac4-4169-8225-f8d60376216a.filesusr.com/ugd/a1c2c7_0b4bc0f3fa9e4d9c86605099ff0ebbed.pdf?index=trueIn PDF document text
    • https://eb72eaa1-ef55-40a3-a653-f6d21bccf295.filesusr.com/ugd/54913d_b6e235e1535a4fb58bcec11bf9fe2ea7.pdf?index=trueIn PDF document text
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_10548724e8d241ecb9f363611321d4c5.pdf?index=trueIn PDF document text
    • https://748e62c5-a849-4dff-87e7-3b5f74cb3522.filesusr.com/ugd/0df896_c82a6a57404b4d2b99aeb57ec72f2bd0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/59917566625.pdfIn PDF document text
    • https://0298dc5a-7924-4276-8279-06452a5288da.filesusr.com/ugd/b30cf0_ba78bc47ca534495aa60be414ada08e4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/dagekuxigidajitafavubu.pdfIn PDF document text
    • https://71e5fc8e-cc9a-4633-96c3-2c70acd464d0.filesusr.com/ugd/f08e01_ca918bb2fe8f4956b7270157fb6860bd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/rizudorewijez.pdfIn PDF document text
    • https://5e54d98c-4257-4cc7-9010-48f3df296eb2.filesusr.com/ugd/05240c_61a53a7e49ce4595a19ebeef605dced0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/63675265681.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_c9b72765b82e456fbcacc997aff6a6ba.pdf?index=trueIn PDF document text
    • http://nizowozutagele.atwebpages.com/bland_diet_food_list.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5D 5196 bytes
SHA-256: d8ce889e7a61ea9b327f425e5f8dc846614c71116736cf29410944de6f71e5b6
font_01_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 10392 bytes
SHA-256: 6a46fc46cc27daeb6c7cebf20e5a8af3af674d47f90661dbbce6542cca02ceb2

Open this report in the interactive analyzer, or submit your own file for analysis.