Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e617b585d38f540…

MALICIOUS

PDF

43.2 KB Created: 2020-10-15 08:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bcba466ff21650fe31e98b72f5b045dd SHA-1: 96fe63a69b0bedbe2967e204fa0975dab1dbeab4 SHA-256: 2e617b585d38f540929ef6de739a9fb6fac60db679a4172366ba1602573fba90
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/123?keyword=shower+screen+installation+instructions In PDF document text
    • https://site-1043207.mozfiles.com/files/1043207/nogenosetiwifiwepelaf.pdfIn PDF document text
    • https://site-1042770.mozfiles.com/files/1042770/1013151610.pdfIn PDF document text
    • https://site-1039731.mozfiles.com/files/1039731/kapigolofiwenazuvep.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/bamuralizoxaxetexe.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • https://fupexorugukemig.weebly.com/uploads/1/3/0/8/130814763/5635707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f87878f61108.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f86f958d85ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8772e1e610c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f86f91798419.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f87136c3b35e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_5f8770e86912a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369164/normal_5f87a19553b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f86fb2de40b5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef8f2ba-8be7-49ec-ac01-201ba15419b3/dunesudimexajerozogunopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10fa69a-47ba-497e-a3b7-cff9de0f0de4/mobufikubotaparalameto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/9428838102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3355/9203/files/veminazixug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7306/9990/files/facebook_sound_collection_commercial_use.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2511/2477/files/forever_21_coupon_code_july_2020.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACA 5080 bytes
SHA-256: b276bd24c5e9f94ad846a26c00751d9692e782be2fc94001239b2efbcdb296c2
font_01_sfnt_off00007c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C11 10320 bytes
SHA-256: 7b1638438979600fa2cbb7e7aafaff22c1f0ac61750906be5928a2bd8acd9506