Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58de69f9393c47e…

MALICIOUS

PDF

51.8 KB Created: 2020-10-03 13:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8793ce223ea29532e58cdc349fef017b SHA-1: 80adf7f3a4793df2e5e1993b83bb58cdb0e2329e SHA-256: e58de69f9393c47e9a8141c967588f95197095c69b8b547a2514ee4230ef3533
124 Risk Score

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 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=best+whole30+book In PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/taror.pdfIn PDF document text
    • https://site-1039886.mozfiles.com/files/1039886/99501132148.pdfIn PDF document text
    • https://site-1037854.mozfiles.com/files/1037854/34407608182.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/xiroropeb.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/40828418398.pdfIn PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/21839936899.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/42156544896.pdfIn PDF document text
    • https://site-1036926.mozfiles.com/files/1036926/42801106350.pdfIn PDF document text
    • https://site-1037858.mozfiles.com/files/1037858/boxelesarejufusi.pdfIn PDF document text
    • http://files.marcelwesdorp.nl/uploads/1/3/2/6/132695543/67d1b2f5b1.pdfIn PDF document text
    • http://jopulifo.skylarnicestore.com/uploads/1/3/1/4/131438163/kozojoj_bidab.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/62006211036.pdfIn PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/58340039823.pdfIn PDF document text
    • https://site-1037916.mozfiles.com/files/1037916/lamabijenokiwikuvonurafi.pdfIn PDF document text
    • https://site-1036756.mozfiles.com/files/1036756/gepunugisafiwu.pdfIn PDF document text
    • https://site-1036848.mozfiles.com/files/1036848/megogagolejuxugew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In 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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 4752 bytes
SHA-256: cdfc06095cf6efab3b859095e1bcc6ae6ba992f3f41e7e4a5d755ed8839826f2
font_01_sfnt_off00008182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8182 6068 bytes
SHA-256: d8e4b7f44dfb66ea49c7f1cefd345a391fade3fb548cc17de4cdbf151663dabd
font_02_sfnt_off00009133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9133 10208 bytes
SHA-256: b8822889dcfa3edf5ff12fc6978ab66812ca0eb5731a98be946b72c91301516a
font_03_sfnt_off0000b412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB412 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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