Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab7b88f14f9afb0…

MALICIOUS

PDF

54.1 KB Created: 2020-10-01 10:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3173d0678308afb0ddf3f56533b61b72 SHA-1: a803f7ed22588bdb02a1fe236ba23b754b6f479d SHA-256: bab7b88f14f9afb06297f931d637d9b8b3fdd5990b45d0ac25aef640bffa43b4
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=one+way+anova+examples+with+solutions+pdf In PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/dezewusumumis.pdfIn PDF document text
    • https://site-1036957.mozfiles.com/files/1036957/59622204551.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/97108176865.pdfIn PDF document text
    • https://site-1038581.mozfiles.com/files/1038581/42927135834.pdfIn PDF document text
    • http://files.prositeinspections.com/uploads/1/3/1/4/131454521/rubag.pdfIn PDF document text
    • https://site-1038475.mozfiles.com/files/1038475/jezeged.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/mededazuw.pdfIn PDF document text
    • https://site-1039813.mozfiles.com/files/1039813/22211142431.pdfIn PDF document text
    • https://site-1037054.mozfiles.com/files/1037054/gufevunivofogilisokegowup.pdfIn PDF document text
    • https://site-1036995.mozfiles.com/files/1036995/govugagebajipagizepugafij.pdfIn PDF document text
    • https://site-1036651.mozfiles.com/files/1036651/18972031663.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/zodipef.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_off000093f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F8 5536 bytes
SHA-256: fc48f15f88a92d0428eb02ff08949e90df7cf034b3aef349cbd60486627f7114
font_01_sfnt_off0000a6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C4 10832 bytes
SHA-256: f6899eafe0cb26a3afa54ad99c736272b7b66b4368a8615bdea1e07dc72e8f99

Open this report in the interactive analyzer, or submit your own file for analysis.