Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ec21786c339318…

MALICIOUS

PDF

50.1 KB Created: 2020-10-24 01:49:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 5c379dac4cfc3394c6473f64f301de48 SHA-1: 4cc30206efd41253268ec0caf74188ac7a48f82d SHA-256: 96ec21786c33931854dfa10ad5e8bcc4d95194e76beba18004394eb1399c53f7
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/pify?keyword=insuffisance+surr%25C3%25A9nale+chronique+pdf In PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/702e12.pdfIn PDF document text
    • https://delujopasetew.weebly.com/uploads/1/3/4/3/134399242/35200.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/832302.pdfIn PDF document text
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/sopemifekumexena.pdfIn PDF document text
    • https://kufazijofiw.weebly.com/uploads/1/3/0/7/130776126/8172765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f8dde75d2693.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f8ca81e998d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f87a6e6950c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_5f8b596a1f437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f87c6a7f05d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000080d5.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000080d5.bin)
    • https://s3.amazonaws.com/zarelusipofox/zakakejegenapapeg.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/25819084488.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/pedowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/purposes_of_law_in_a_country.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8425/7724/files/dubai_work_visa_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1732/9566/files/65987255634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0119/9777/files/distilled_water_gone_bad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7856/1178/files/7469919036.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c5a1ca8-93b6-4dba-b45e-da871ef44652/75251511686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c936ea3d-c4ed-4aba-a7c0-be1728088ae7/14909493080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0973a9-514c-4bd3-9646-d64825456f26/fire_emblem_heroes_error_code_803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4d7c431-50d8-4b37-8c3d-e31146db19ab/juregefimunibemedutinolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662bfb9c-f257-4495-aa77-a3c2c157bd36/xbox_one_width.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_off000080d5.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D5 5448 bytes
SHA-256: 0f4feb1c5a87a5a71fc56f3906c263596600eb8ca90e7092cb2bcd9c457e0c44
font_01_sfnt_off0000930a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x930A 12152 bytes
SHA-256: acae5e4d3825549682c63bccd4acc84fe8a6181ca0cd56bf6c05807b95fa46e4