Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce640693d5bee7e7…

MALICIOUS

PDF

54.0 KB Created: 2020-10-24 09:42:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-10
MD5: e7cf08bbc12cec96dd811ee9c69cbcf0 SHA-1: d2b9cc849426175c018a553628dbb7d0abf0337b SHA-256: ce640693d5bee7e7e5618526845385d99af37cd79e6c2121b4bcc5243c06320c
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://gettraff.ru/strik?keyword=cevaplar%25C4%25B1+ile+stld+i%25C3%25A7in+kapsaml%25C4%25B1+viv In PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/wapojumilitabe-ligunakewa-siruseduti.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/9325577.pdfIn PDF document text
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/6651022.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/7922058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369183/normal_5f884a2d2c33e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5f8c80780c0f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_5f8da383203fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_5f891aa539596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5f93654b40f35.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/soriv.pdfIn PDF document text
    • https://jaxuwigoba.weebly.com/uploads/1/3/4/2/134266140/6b6db48588aa6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_5f91009266588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375095/normal_5f8aaefe33c79.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008db9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008db9.bin)
    • https://cdn.shopify.com/s/files/1/0501/5771/5621/files/path_of_the_juggernaut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8190/1253/files/96735168497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0557/7896/files/comida_tipica_de_el_salvador.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4212/5997/files/mmrda_recruitment_2020_notification.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 extracted file (font_00_sfnt_off00008db9.bin)

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_off00008db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB9 5348 bytes
SHA-256: 048c7f8f076d57c2fa46e547483a85bea2ad8924ea587f2ff7242523d480ed43
font_01_sfnt_off00009fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD3 13376 bytes
SHA-256: 0f9c46e566249690f328820ed0dd17ff55f6dc7b02af67aed9fe2d6bfdf0e636

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