Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee89ca9d0775b40…

MALICIOUS

PDF

57.4 KB Created: 2020-10-03 02:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1f65263dcc2a1cce829d5718f33ce4c4 SHA-1: cb30e76736bbbf766a7c0d854a69b0bcab7cf181 SHA-256: eee89ca9d0775b40bde5e31f9ff3ac1ca22887bc6a05d7e3ecd6662a2a63bb24
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=lowrance+hook+7+user+manual In PDF document text
    • https://site-1039332.mozfiles.com/files/1039332/tagid.pdfIn PDF document text
    • https://site-1038946.mozfiles.com/files/1038946/52562679685.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/nekefekir.pdfIn PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/10930173685.pdfIn PDF document text
    • https://site-1036876.mozfiles.com/files/1036876/51317293645.pdfIn PDF document text
    • https://site-1036975.mozfiles.com/files/1036975/supanogil.pdfIn PDF document text
    • https://site-1037881.mozfiles.com/files/1037881/pumigarufabar.pdfIn PDF document text
    • http://files.besedin.org/uploads/1/3/1/4/131437276/6071c2ec86.pdfIn PDF document text
    • http://files.pendulumhealing.com/uploads/1/3/2/3/132302824/zelidunisipo-pebuw.pdfIn PDF document text
    • http://nemibuz.ostendmarineservices.com/uploads/1/3/0/7/130738836/913396.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3604/4183/files/cherokee_indian_flag_bandana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/mewirodezuj.pdfIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F87 4968 bytes
SHA-256: d19ed3990cf24e9eebc31e8222ac4838d41b3b4a5e516888684d8299c392cade
font_01_sfnt_off0000903f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x903F 2300 bytes
SHA-256: 8e6c8abbb6b0b55865f11471b9d752b6db7a1325341fe7b55dd345b89e7a3397
font_02_sfnt_off00009a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A37 15536 bytes
SHA-256: d1682490653b1b58a580f4d1bc187c3706a01d6633bb412a607e78515186e05f
font_03_sfnt_off0000ca7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333