Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e7d331a59227ea…

MALICIOUS

PDF

41.4 KB Created: 2020-09-30 09:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ecf85227d0d7d67f90e6cd53f7395fa1 SHA-1: 06a14f21af56fc1018a63ce8f41c658e97be7a45 SHA-256: 96e7d331a59227eae26797c3c0056b35c825045fc4644021743b5f9cc6b57ddf
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=alain+de+botton+essays+in+love+pdf+download In PDF document text
    • http://files.mcdonaldelectrical.com/uploads/1/3/0/7/130740222/8929158.pdfIn PDF document text
    • http://files.khunterart.com/uploads/1/3/1/4/131453399/lukoxifosofug.pdfIn PDF document text
    • http://files.legalnursesystems.com/uploads/1/3/1/4/131482832/nivuw_faxizedujo_gomewave.pdfIn PDF document text
    • http://files.igottheshotphotography.com/uploads/1/3/0/7/130775102/kamepabizus.pdfIn PDF document text
    • http://files.bread4life.org/uploads/1/3/1/3/131397946/633d8c84.pdfIn PDF document text
    • http://files.villaup.com/uploads/1/3/1/6/131636629/sizajuditiwadik.pdfIn PDF document text
    • http://rotilibi.kurokobrothers.com/uploads/1/3/1/4/131437425/5259340.pdfIn PDF document text
    • http://wamat.sweetbstoggs.com/uploads/1/3/1/4/131437753/ec69753.pdfIn PDF document text
    • https://site-1036946.mozfiles.com/files/1036946/jilesodulevevokutu.pdfIn PDF document text
    • https://site-1037011.mozfiles.com/files/1037011/93090597611.pdfIn PDF document text
    • https://site-1036750.mozfiles.com/files/1036750/62196961864.pdfIn PDF document text
    • https://site-1036840.mozfiles.com/files/1036840/1663475109.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/tatudeserapuzofoler.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/82647923067.pdfIn PDF document text
    • https://site-1036832.mozfiles.com/files/1036832/82377261718.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/47945729021.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_off000062b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 5324 bytes
SHA-256: 490d2fba92d80f9a689d93aa8fbf637198f53a861d4d251d33eb46835ac4f348
font_01_sfnt_off00007502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7502 10412 bytes
SHA-256: e8a335bac71f36dff879caf64bb6c08dfe8caab4e6e41ac8faa1964e836beb3f