Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0deaf5831e0ca4…

MALICIOUS

PDF

84.6 KB Created: 2021-05-24 13:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 6e009cbfcaa6ff39f9cb480e62c4e61c SHA-1: 2c498c6c30ce20d931b180d07e708d7cf4d4745d SHA-256: 9b0deaf5831e0ca49f2aa2bbc9a52e8b3fc33cd8132c2b7ec4f08a146b37faf7
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The embedded URL `https://soxebez.ru/strik?utm_term=livro+trading+in+the+zone+portugues+pdf` is the primary indicator of a phishing lure, likely leading to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/strik?utm_term=livro+trading+in+the+zone+portugues+pdf PDF link annotation
    • https://lajexupizad.weebly.com/uploads/1/3/0/7/130775806/42a19f509d2c.pdfIn PDF document text
    • https://nafoxowozuvika.weebly.com/uploads/1/3/1/3/131383754/padonagot.pdfIn PDF document text
    • https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/zamirejegi-tewixuviwika-dodewefidinofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b6e5b57-b763-484e-9a6f-78a8b31d9141/powomeminejudurofe.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/federalist_paper_51_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc5983f-e090-411b-b534-3557e395b7f9/ls_dyna_software_download_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/sujugekefavonugokeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720a34cf-b0f5-407f-89fa-8203b23b9fdc/whiter_teeth_make_you_look_younger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53c9d46-7204-422c-bcc2-8239468391c6/kulexaganikul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae49a192-688d-400a-a4f3-21e3518d8971/veravilexoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f179c51-ae95-44b4-b4d8-355dfbea802f/can_mild_scoliosis_be_corrected_in_adults.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/buenos_das_princesa_pelcula_la_vida_es_bella.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d534ef-b823-4de3-b037-aea0e88c6fb4/porter_cable_air_compressor_135_psi_6_gallon_2_hp.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/what_is_gong_gong_seafood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a3ce53-189d-405d-9367-6ac4e01ff9c2/the_orphan_girl_poem_critical_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/barameneditanosur.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/ks3_maths_multiplying_decimals_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/big_little_lies_season_2_cast_ziggy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27835380-513e-4363-93f9-1b964007cb6d/how_to_replace_weber_summit_burner_tubes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9752be69-8228-475f-941e-8b85f1578f16/fonakisajojuxunalipi.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/wodufutalurizivak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9e0e76d-4b0d-4fd3-ace4-429d0009cbf0/magnetic_force_on_a_bent_wire_conceptual_question.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462fd5bc-6c58-4f6f-b8a7-144e5532e81b/is_tara_brach_sick.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_off000108c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108C3 5324 bytes
SHA-256: 34c8b9f980d2d6a3d73d9a6040ca8ef7b797d1d9f2f85a7ab017cfdad8f5535f
font_01_sfnt_off00011af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF0 12948 bytes
SHA-256: 1d28d7d8c46c3f7df6844e24b24e270360adee8a7334b1947b2b56a18138bbdb