Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc969c495e6c876…

MALICIOUS

PDF

76.4 KB Created: 2021-03-16 13:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 780213e1aca572214527a3f8d9b3a1cb SHA-1: ec21c472c89549672d3ed83628e4f4f627cf0731 SHA-256: bdc969c495e6c8764da05d0d6825bd37749e3bb38edfbf875a167f70d3f1f965
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains numerous external links, with a significant number pointing to potentially malicious domains, suggesting a link farm or phishing operation. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate the document's primary purpose is to redirect users to external sites, likely for credential harvesting or malware distribution.

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
  • 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://xezojetit.ru/wix?keyword=power+notes+answers PDF link annotation
    • http://vipmanmarket.space/41596085056qyl37.pdfIn PDF document text
    • http://hookup668.site/82980687200wii2m.pdfIn PDF document text
    • http://mugedly.xyz/casio_world_time_illuminator_watch_review6qt4u.pdfIn PDF document text
    • http://fegalaro.iblogger.org/livros_sobre_antroposofia.pdfIn PDF document text
    • https://fawubanine.weebly.com/uploads/1/3/4/3/134321827/5d704757.pdfIn PDF document text
    • http://creditreportusa.info/ultimate_halloween_word_search_answersyk2un.pdfIn PDF document text
    • http://tiktoktop.design/gepewuxubitof8oiz.pdfIn PDF document text
    • https://guvorike.weebly.com/uploads/1/3/4/2/134266232/8745401.pdfIn PDF document text
    • https://gixakipero.weebly.com/uploads/1/3/1/4/131412713/vitubut.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/4b0b23c7-69bc-4e7b-87fc-7a175417c754/formato_contrato_de_arrendamiento_local_comercial_mexico.pdfIn PDF document text
    • http://sezusol.epizy.com/23293693398.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/960946307.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/74885162591.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/95601105550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e4bd99-f117-45dd-a684-41a43167aefd/dizevugiloxifisila.pdfIn PDF document text
    • https://s3.amazonaws.com/popisiburewixuj/types_of_ductless_heat_pumps.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/sekimudataraj.pdfIn PDF document text
    • https://s3.amazonaws.com/zexozavo/zodukizoxuvusuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/dell_support_india_drivers_and.pdfIn PDF document text
    • http://vewizoxevig.rf.gd/86798415289.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/64368976676.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_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 4740 bytes
SHA-256: 7d7e45918c1e135c82b76b87e50b335a2f7dc60840c92f12938cecc9675c5b29
font_01_sfnt_off0000ff49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF49 10684 bytes
SHA-256: d577625e7c7165b49a79988a25233f7e980718256563373d24bb73e996d2514f

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