Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f98e5f4a62ffb5f…

MALICIOUS

PDF

42.5 KB Created: 2020-10-25 22:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 54e616bd2fdaa2b075a8b933b0d46f14 SHA-1: 2f695857335e0b50a9140bad1c696ce8d263a6dc SHA-256: 2f98e5f4a62ffb5fadb1ee8ec0363c7d8ae1edba5beb8996b9df53f0980c9600
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://cctraff.ru/123?keyword=legoland+florida+map+2020+pdf In PDF document text
    • https://nupureforisuro.weebly.com/uploads/1/3/4/3/134353583/5348dd26e5f.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/bewoti.pdfIn PDF document text
    • https://wabemogulumog.weebly.com/uploads/1/3/4/3/134384503/1719ffd1.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://bafovulik.weebly.com/uploads/1/3/1/0/131070506/xemuwolerigu.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/728af.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/bawalidamovidud/algebra_worksheets_free.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/53192901975.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/character_traits_worksheet_5th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/62960713147.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/principio_de_conservacin_de_la_carga_elctrica.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/agni_siragugal_tamil_book.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/88349101759.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/the_economist_november_3_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/ic_7805_voltage_regulator_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/salsa_bechamel_historia.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/66566434790.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/pdf_bestanden_samenvoegen_word.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/bcs_study_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/components_of_effective_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/gefavupoko.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/presentation_about_myself_for_job.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_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 5400 bytes
SHA-256: 65dae477fbc77ae0a379577c410ecdfb2df7220c19f1bd1d0c76df0a2cafbfbc
font_01_sfnt_off0000767e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767E 12028 bytes
SHA-256: 18f322badb5b3fb4d4bc9b3a46f91d920b3d244273444ad7e15721b947849797

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