Malicious PDF — malware analysis report

Static analysis result for SHA-256 8426cadc6d4469b1…

MALICIOUS

PDF

92.9 KB Created: 2021-03-29 12:11:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: b368a58a79c56efabf9195413f6f5d47 SHA-1: 681bd2c5db5c14181f3cbec66cc216a27c38ff1a SHA-256: 8426cadc6d4469b13b10fe38ad03ab7c07a376610ebe8f5e0c10aba999330d70
214 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a redirector URL associated with a 'ticketmaster service fee avoid' keyword, indicating a phishing or scam lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and ML_NYX_PDF_MALICIOUS strongly suggest malicious intent. While no scripts were explicitly extracted, the nature of the links and the PDF structure suggest it's designed to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=ticketmaster+service+fee+avoid In PDF document text
    • https://bupuvebawa.weebly.com/uploads/1/3/2/7/132740405/006900993f66.pdfIn PDF document text
    • http://nalobuberejiner.iblogger.org/mapa_turistico_barcelona_2018.pdfIn PDF document text
    • https://dosisusibifoba.weebly.com/uploads/1/3/4/2/134236234/c3ae83173cc.pdfIn PDF document text
    • http://pawezujexas.mywebcommunity.org/2135597282.pdfIn PDF document text
    • http://setokanekema.mygamesonline.org/weraki.pdfIn PDF document text
    • http://memowelubi.mygamesonline.org/limites_et_asymptotes_exercices_corrigs.pdfIn PDF document text
    • https://zazigiwozaka.weebly.com/uploads/1/3/2/6/132681333/9934232.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/jaxesabi/benefits_of_formative_assessment_in_education.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/information_about_2_generation_of_computer.pdfIn PDF document text
    • http://seroritubofa.atwebpages.com/physical_science_notes_module_1.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/nice_guidelines_antenatal_care_diabetes.pdfIn PDF document text
    • https://33fe1336-4051-433c-b691-b763732126dd.filesusr.com/ugd/6c8f37_7d3614ad50c143e9b679b51336f6f75f.pdf?index=trueIn PDF document text
    • https://66f9c2bc-82a6-463d-9ccd-9c94d3d8805e.filesusr.com/ugd/b361c6_9908bc688fa84dfc9352fbf37650c4c0.pdf?index=trueIn PDF document text
    • http://tokewaperomuveb.epizy.com/isosceles_and_equilateral_triangles_worksheet_4-_5.pdfIn PDF document text
    • http://vegubom.atwebpages.com/diagrama_de_fases_de_los_aceros.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/four_tone_siren_project_report.pdfIn PDF document text
    • http://rozosijamuruxo.rf.gd/how_to_create_a_watercolor_background.pdfIn PDF document text
    • http://kibagog.onlinewebshop.net/xediwinimuvikusa.pdfIn PDF document text
    • https://6d4a8fb0-9a8a-4850-8aa1-2b5706121c9a.filesusr.com/ugd/ff2e72_6dd3a7e4c9e34ee1811f93f70a0d99a1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wozoxub/codon_definicion.pdfIn PDF document text
    • http://gifefuko.rf.gd/autocad_2007_free_mac.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_off00012b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B7B 5208 bytes
SHA-256: 6d08cd863738fd3079c52c1c23f8be9fe1f236ef54f566e4bdb327b4b54775af
font_01_sfnt_off00013d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D26 12124 bytes
SHA-256: 93e8af2e488ef4fb297ec2d3af1d61b6227c99e675a4f4f6adc5c7f10e3fa770

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