Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd5054cf5f2a9304…

MALICIOUS

PDF

83.8 KB Created: 2021-03-17 23:50:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4ecbb9277bb26d3fc16eb9b0b1d1fbd1 SHA-1: 5a9c2ee256f23b1f65c467ee4d9331d4cfdcda4e SHA-256: bd5054cf5f2a9304af2c8be4df3c0ee44a0340c60216327d5a9e7f03c8e04d68
156 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://soxebez.ru/strik?utm_term=2005+dodge+durango+service+manual PDF link annotation
    • http://lifeit.pro/newujujulp49c.pdfIn PDF document text
    • https://vekewofamir.weebly.com/uploads/1/3/4/1/134131384/rujume.pdfIn PDF document text
    • https://getiwojaxewife.weebly.com/uploads/1/3/4/0/134012456/124116.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/jfijidg/vegan_lose_weight_success_stories.pdfIn PDF document text
    • http://hookup154.site/reaper_miniatures_bones_black0kun8.pdfIn PDF document text
    • http://farvestnn.ru/77136457027zbuq1.pdfIn PDF document text
    • http://it50off.pro/homelite_leaf_blower_bagcvyyj.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/gesLif4/kutulesomugig.pdfIn PDF document text
    • http://dkblogin-de.com/my_digital_stream_converter_box_manual5lfit.pdfIn PDF document text
    • https://cdn.sqhk.co/fovipobex/hiyvhj6/guided_reading_level_chart_dra.pdfIn PDF document text
    • https://sofamilases.weebly.com/uploads/1/3/5/4/135401016/nejolad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/regovadeje/the_exorcist_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/madness_our_house_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/11816471116.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/72568938970.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/nimekibizugof.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/navette_aeroport_beauvais_hotel_formule_1.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/vision_classroom_management_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/plexiglass_sheets_thickness.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/human_development_index_report_2018_rankings.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/bbose_marksheet_image.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/81134223846.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E6 5424 bytes
SHA-256: c8510f22c74b405b1a6c67d74fd1c8067411caaf3616b404973627953e619359
font_01_sfnt_off00010c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2D 11404 bytes
SHA-256: d184620398637385183e087d7bcc2df1247d453bd4d864070e0e13ae036e35b2
font_02_sfnt_off0001335a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1335A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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