Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b47532be9f3e54…

MALICIOUS

PDF

59.7 KB Created: 2020-09-30 22:41:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 746731f7f3d9e76a67ca6a657701f000 SHA-1: 817517991fb52527f62352412f81b13ba4290b98 SHA-256: 00b47532be9f3e54dd2eb3f3db54222213305687ea400b789aa54250a35eb79d
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to suspicious domains and are likely part of a link farm designed to redirect users to malicious content. The primary malicious URL identified is https://cctraff.ru/strik?keyword=the+tempest+pdf+modern+english, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the same malicious URL, reinforcing the intent to direct users to harmful sites.

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/strik?keyword=the+tempest+pdf+modern+english In PDF document text
    • http://voture.louisediggle.com/uploads/1/3/1/6/131606563/447407b5.pdfIn PDF document text
    • http://files.wellnessroadmassage.com/uploads/1/3/1/4/131406173/874928.pdfIn PDF document text
    • http://files.authorklmyers.com/uploads/1/3/2/8/132814967/504e2.pdfIn PDF document text
    • http://duzova.canadianhorseshoeing.com/uploads/1/3/2/6/132695569/bikemomemugekab.pdfIn PDF document text
    • http://files.hdasussexbranch.org.uk/uploads/1/3/1/4/131482952/bejipus.pdfIn PDF document text
    • http://files.westwoodpubliclibrary.org/uploads/1/3/1/3/131382700/5076d56.pdfIn PDF document text
    • http://files.blackbirdecor.com/uploads/1/3/1/3/131398204/2651329.pdfIn PDF document text
    • http://sawomeda.musicwithmrd.com/uploads/1/3/0/9/130969130/7057139.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/weather_report_in_kolkata_district.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5040/0920/files/23883505019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6273/0645/files/mokagudazepigev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/kibugesubolubavozute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/piwuxexewez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1463/files/cv_format_free_sri_lanka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/41811880379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1512/6685/files/the_verb_tener_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3521/4503/files/wakadiniwone.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_off0000ac69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC69 5192 bytes
SHA-256: 08bdcaece95e080a8b605eab362bf501f2347e87656825a94f84d0fe0b304165
font_01_sfnt_off0000bdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDEA 10388 bytes
SHA-256: dd979a8f5aad5a0af1f011cf4e2e6b7a36cca102f24350a61076fb007e11df23

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