Malicious PDF — malware analysis report

Static analysis result for SHA-256 335987d62f66dd64…

MALICIOUS

PDF

51.3 KB Created: 2020-10-15 04:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e7d9847a87daee9b84460e7f51d75bbb SHA-1: 75c168e8b7b0f2ff7aff0f8d08be8eb4b718d4cd SHA-256: 335987d62f66dd645b8b3d50d2695431084f7b6d11c4b256c466480781b4030b
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=interfaith+calendar+2020+pdf In PDF document text
    • https://site-1043288.mozfiles.com/files/1043288/71801819447.pdfIn PDF document text
    • https://site-1042875.mozfiles.com/files/1042875/juruvexe.pdfIn PDF document text
    • https://site-1038970.mozfiles.com/files/1038970/71359394245.pdfIn PDF document text
    • https://site-1036936.mozfiles.com/files/1036936/lasivelazuwadiwabip.pdfIn PDF document text
    • https://site-1039813.mozfiles.com/files/1039813/bujatal.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/woxesegela.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/sidutazufigag.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/1376720.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/8909761.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3029889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5f87801cdf986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f871a8e3f9b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f8725f72dbf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8775b5a6a27.pdfIn PDF document text
    • https://site-1036693.mozfiles.com/files/1036693/peneruxegotutud.pdfIn PDF document text
    • https://site-1043791.mozfiles.com/files/1043791/faragefizipesekanev.pdfIn PDF document text
    • https://site-1039283.mozfiles.com/files/1039283/rudoniz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9473/7045/files/9661058763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/narozixijoxaxerafet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8281/8751/files/r600a_refrigerant_price.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7125/8278/files/48089398543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0225/files/67629822305.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 5276 bytes
SHA-256: 588e91f8732479c8ae88e812d1d43aef3b649b44b704d76edb751f55b8303ad9
font_01_sfnt_off00008305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8305 10284 bytes
SHA-256: 5c720a88cfd69179af9295b5bbd4c0ff33ba315a1928e9afb3dec27f8557f759
font_02_sfnt_off0000a676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA676 17068 bytes
SHA-256: d89d7d28109cde0aab0bdc4c16a6a73501b1fb1e1405cfb0873b14f8604f0e71