Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b69321b23f29eaf…

MALICIOUS

PDF

46.5 KB Created: 2020-10-15 06:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d67bdde11ad209da6460e6030828178b SHA-1: b10e9e6b829b7a96f8d958680954ff2f41ae20f4 SHA-256: 2b69321b23f29eaf084495fc6f7b56e0abc2d1c881d288046e17d98615e61f26
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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=dictionnaire+des+finances+publiques+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f876b931b261.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f879f118d487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365545/normal_5f870ffde99f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f876dc7acc03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8749d59353f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_5f87822de5ebf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f87b9aac3d68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f872db168eb9.pdfIn PDF document text
    • https://site-1036987.mozfiles.com/files/1036987/70502461569.pdfIn PDF document text
    • https://site-1041411.mozfiles.com/files/1041411/95671243774.pdfIn PDF document text
    • https://site-1043207.mozfiles.com/files/1043207/budipaxigozatimuwosobos.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/wokiva_pisukugozimu_xapobebinub.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/1135241.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/bibesekukemugedovofa.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://site-1039378.mozfiles.com/files/1039378/27414392659.pdfIn PDF document text
    • https://site-1042357.mozfiles.com/files/1042357/29005365175.pdfIn PDF document text
    • https://site-1042788.mozfiles.com/files/1042788/sajumutogejaxezuba.pdfIn PDF document text
    • https://site-1041381.mozfiles.com/files/1041381/29769233962.pdfIn PDF document text
    • https://site-1039645.mozfiles.com/files/1039645/connect_the_dots_worksheets_free.pdfIn PDF document text
    • https://site-1042843.mozfiles.com/files/1042843/52872084784.pdfIn PDF document text
    • https://site-1043519.mozfiles.com/files/1043519/64853377549.pdfIn PDF document text
    • https://site-1042514.mozfiles.com/files/1042514/vobitirafuga.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000747f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000747f.bin)
    • 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 extracted file (font_00_sfnt_off0000747f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000747f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x747F 5416 bytes
SHA-256: 6b75238189b440d266487547e01dc8a28f2f2e86ece54d6d373b73914402ee77
font_01_sfnt_off000086ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86EC 11208 bytes
SHA-256: 8a14165f961bad8dae58f0f0aeddc2cc1f0e31876d70c075330ce3000bd18c35