Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4cae1de5de4bc6…

MALICIOUS

PDF

41.6 KB Created: 2020-10-08 09:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 47069ea9f04a71fdd877e25b15cdc808 SHA-1: 88ecb39d648d19e7bd28ed9c62e7f4a20bb705f0 SHA-256: bf4cae1de5de4bc6cc73efc79ac12692bcf357d0d0c9a66269f665a614a8c1b8
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/pify?keyword=self+reliance+ralph+waldo+emerson+pdf In PDF document text
    • http://pufetiz.millantiques.com/uploads/1/3/0/8/130814761/bovexekaxiwino.pdfIn PDF document text
    • http://jexorusef.jamesmorrowthemovement.com/uploads/1/3/1/0/131070702/7307859.pdfIn PDF document text
    • http://xiwawuzi.boostsportsconsulting.com/uploads/1/3/1/3/131380429/nexabu-wotegu.pdfIn PDF document text
    • http://rosub.jemoweryandsoninc.com/uploads/1/3/2/6/132683001/nodopejogimiga.pdfIn PDF document text
    • http://peradejul.foxfordtraditionalweekend.com/uploads/1/3/0/7/130739873/bodokaminekedabo.pdfIn PDF document text
    • http://files.msdanielledobeleit.com/uploads/1/3/1/4/131454065/sosem.pdfIn PDF document text
    • http://files.rachelmccarthy.com/uploads/1/3/0/8/130874250/tejiwagajubavewuro.pdfIn PDF document text
    • http://gimedit.artdame.com/uploads/1/3/1/6/131636612/5419039.pdfIn PDF document text
    • http://xosar.mariabotea.com/uploads/1/3/1/4/131406592/abc1413.pdfIn PDF document text
    • https://site-1037240.mozfiles.com/files/1037240/76248723998.pdfIn PDF document text
    • https://site-1042434.mozfiles.com/files/1042434/89509011042.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/xovugawanupifoxiwuwo.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/76217880022.pdfIn PDF document text
    • https://site-1039889.mozfiles.com/files/1039889/xepariziwogudematukabubil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6458 5588 bytes
SHA-256: 0fa0677faee9a3e868fb9d187b0e1e5531bbf43a1df85f5f8a44b8a49ca28c22
font_01_sfnt_off0000774d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x774D 10068 bytes
SHA-256: 361853193ede1a0d7fbc2078a22a19cd83959b4aef290e16c5ca677fa37ff9ec