Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5b87aa74282cbe…

MALICIOUS

PDF

61.0 KB Created: 2021-02-18 11:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ce415c9bfb9f060c25694984539f8e06 SHA-1: 12e34ce2ab7bd3fe6c62e3adbc5ee52569bc84c0 SHA-256: 6e5b87aa74282cbec52997539c160dd7d351c9d0f4b6e93eaa966a802b52fa43
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/123?utm_term=jesus+and+the+disinherited+full+text PDF link annotation
    • http://findattime.com/jebirexires6hvb8.pdfIn PDF document text
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/678251.pdfIn PDF document text
    • https://lotunesu.weebly.com/uploads/1/3/0/9/130969364/28ae00f5479.pdfIn PDF document text
    • https://dajoromu.weebly.com/uploads/1/3/4/3/134309711/zawezavaj.pdfIn PDF document text
    • https://sosanibizug.weebly.com/uploads/1/3/2/6/132695556/ab41da.pdfIn PDF document text
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/d63f28899591b3.pdfIn PDF document text
    • http://rotixumuzu.22web.org/html_css_application_form_template.pdfIn PDF document text
    • http://austritkfa.com/3533481279q7gfy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402486/normal_5ff9a59001b45.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/wizened_in_a_sentence_adjective19gk3.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/kavifunaruvi/goa_beach_hd_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/98703329251.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/medical_case_study_template.pdfIn PDF document text
    • http://sozejegisiwex.epizy.com/14647854314.pdfIn PDF document text
    • http://dofadedivuxira.rf.gd/sekitazedewobizibot.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_off0000b391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB391 5052 bytes
SHA-256: 798285905990c5f22a42ec143d00fcd1f8050fb6f0e3fafdf29be285ad31f299
font_01_sfnt_off0000c4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4B9 10028 bytes
SHA-256: bde49a30e43d3fe76b86f73a0d1683246bebb18a75c00bd4afc9c864fbaaa00b