Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d7b58350ee3024…

MALICIOUS

PDF

44.8 KB Created: 2020-10-15 18:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 013d51bd1200e399a4b7d0da03d02bef SHA-1: 641c59c99724abe1b506c7a7436622fe7c773756 SHA-256: 37d7b58350ee302485d0dc5ca623a8295c4fc88d4b246e0daf5ed63a7bbd2566
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=my+family+cinema+app+android In PDF document text
    • https://site-1037188.mozfiles.com/files/1037188/37531072275.pdfIn PDF document text
    • https://site-1039759.mozfiles.com/files/1039759/9179055198.pdfIn PDF document text
    • https://site-1041846.mozfiles.com/files/1041846/45238241186.pdfIn PDF document text
    • https://site-1037075.mozfiles.com/files/1037075/38051002159.pdfIn PDF document text
    • https://site-1036929.mozfiles.com/files/1036929/53008989409.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f879c62b8533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f8811cbcf579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f87663c9f661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f88158a79e77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f872c75b1bfd.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/safado-fodidunixoso.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • https://site-1039918.mozfiles.com/files/1039918/79017385166.pdfIn PDF document text
    • https://site-1038378.mozfiles.com/files/1038378/binofukes.pdfIn PDF document text
    • https://site-1039405.mozfiles.com/files/1039405/63399956328.pdfIn PDF document text
    • https://site-1040571.mozfiles.com/files/1040571/mimajaxuwabutawafivir.pdfIn PDF document text
    • https://site-1042779.mozfiles.com/files/1042779/ketuguwosepuwobanigobeb.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7118 5228 bytes
SHA-256: 46ea2ec31c325d8efd54ab8d8a193b47c74cf8eee15b93ce590a5aa71380d6f1
font_01_sfnt_off000082d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D5 10316 bytes
SHA-256: aaaaf4647a8eaec0abebc3a02d641914efb31173e49d076aac059f9bc810f6bb

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