Malicious PDF — malware analysis report

Static analysis result for SHA-256 779af06d45793127…

MALICIOUS

PDF

49.3 KB Created: 2020-10-28 19:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ccfb52f01df4a344c5aeb8d25b730bea SHA-1: b72f383fe371012bf364881307d9e24a4425564f SHA-256: 779af06d45793127007dfed2f22f9838c014317e71d7148857d67146df05c315
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://ttraff.link/pify?keyword=texas+rangers+suites+prices In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8c71137eff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379844/normal_5f8e730c065c2.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/tepas.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/5390495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382197/normal_5f91580618e89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f87a667e3caa.pdfIn PDF document text
    • https://lovemaxo.weebly.com/uploads/1/3/3/9/133997317/xizikosutigemafave.pdfIn PDF document text
    • https://zufugorutamivas.weebly.com/uploads/1/3/4/4/134401118/xakelijakuzote.pdfIn PDF document text
    • https://povelelowu.weebly.com/uploads/1/3/4/3/134331265/tesim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5f914104b7227.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f8996360f81e.pdfIn PDF document text
    • https://mosodujisar.weebly.com/uploads/1/3/0/7/130739504/xuwofosaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8d3d17ceae9.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/038885c85ecf8f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402247/normal_5f91bce32368c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f8f2371f29e0.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/jokez.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000073e8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000073e8.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a9b4.bin)
    • https://s3.amazonaws.com/tuxenipup/mixubimisorewapat.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/witexera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/7756/7132/files/shs_reading_and_writing_curriculum_guide.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_off000073e8.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73E8 4856 bytes
SHA-256: 477c67664378523bb0d366a7e2ab0c14721575dc0c93401a4d80e8f528f95170
font_01_sfnt_off0000847a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x847A 11032 bytes
SHA-256: 46404f31be873df2e4af433b7bb0cced17795cc582ef1cd732b670d7b4950aa9
font_02_sfnt_off0000a9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9B4 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34