Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f9fac729ec5fb34…

MALICIOUS

PDF

86.1 KB Created: 2021-05-24 11:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b6ceddee3e5329727624fe3cee9b6519 SHA-1: 98c9e0b6b3b8a8bd7a047a985db7331dc6bdccbf SHA-256: 3f9fac729ec5fb346b2fc2764dad7403e083152abd4e576df4f842d067a43ef5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, including one pointing to 'gimoguvi.ru', which is characteristic of phishing or malware distribution schemes. While no scripts were explicitly extracted, the presence of numerous external URIs suggests an attempt to redirect the user to a malicious site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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.
  • 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://gimoguvi.ru/strik?utm_term=mujhse+dosti+karoge+full+movie+sub+indo+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486745/normal_601f2b79e4f09.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491723/normal_5fe1a80c42627.pdfIn PDF document text
    • https://lulakoxefinadi.weebly.com/uploads/1/3/4/3/134332070/448897cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475987/normal_604d8a1f86df7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421970/normal_60054ac1f2230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451757/normal_60067fe282630.pdfIn PDF document text
    • https://visunudit.weebly.com/uploads/1/3/1/4/131483005/3280947.pdfIn PDF document text
    • https://vijibasotaxeja.weebly.com/uploads/1/3/5/9/135990507/jegamaguwobat.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/6849931.pdfIn PDF document text
    • https://lalemudisezevo.weebly.com/uploads/1/3/4/3/134359520/253d66a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422631/normal_601fc51f640f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_602b368692bb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414335/normal_5ff426cfe8fbb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/motorola_modem_ip_address_sb6121.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/international_journal_of_economics_and_finance_studies_impact_factor.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/18539604347.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/troy_bilt_7000_watt_generator_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/2011_hyundai_sonata_repair_manual_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/52363327274.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/litegaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/what_page_is_atticus_courage_quote_on.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/33377665881.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/64017804700.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/vedujoda.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001300f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1300F 16972 bytes
SHA-256: d12182a6dfc1d8aec9641b4329ffe8ce844d5646088f21d33eb8707c7025ce94
font_00_sfnt_off0000f886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF886 5760 bytes
SHA-256: 02091ba6f2d3e4b35874e64d4b2ac600df697b62b34abd96e8cb3f79f6d5ec8f
font_01_sfnt_off00010c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C17 10408 bytes
SHA-256: d0a1736b0a7ae1a022318eb124679ce4f909782976345497a70513bbde597b8b

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