Malicious PDF — malware analysis report

Static analysis result for SHA-256 c322011e0017ef59…

MALICIOUS

PDF

43.2 KB Created: 2020-10-16 01:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: db0f611dbbab7995dcf3bc3eda2ad53a SHA-1: f4d65a2707630f28063138dd089c7679d966a1a5 SHA-256: c322011e0017ef5911e5f499a852066b9d1264838ca766004e572d0c87042a99
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=sql+vs+nosql+databases+pdf In PDF document text
    • https://site-1040683.mozfiles.com/files/1040683/fetalikunafij.pdfIn PDF document text
    • https://site-1043442.mozfiles.com/files/1043442/papodudovozefibegepozeguk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f88cabb0b9a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f88c8a04f4f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f88c983de607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f87c92890045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f871d69714d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f88cbefef13d.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/6791123.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fubisi.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/4918653.pdfIn PDF document text
    • https://site-1042013.mozfiles.com/files/1042013/49210952103.pdfIn PDF document text
    • https://site-1037122.mozfiles.com/files/1037122/35338120768.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/1/0486/2545/1166/files/radio_news_script_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3671/9269/files/chinese_cinderella_summaries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4120/5665/files/26678687692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1273/4107/files/elsevier_veterinary_assisting_workbook_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7187/3446/files/ripuxesemalase.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

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_off00006b75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B75 5368 bytes
SHA-256: fae265f77acefd64af824b20a2f6e374e1b1b91ee66f3f843ac9eeb0f20cffe3
font_01_sfnt_off00007dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCF 10120 bytes
SHA-256: a3c807382346d84488595c4e25cb4c4b175de851fd590c7283f6c07586de2d93

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