Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8936707c92f32c8…

MALICIOUS

PDF

44.7 KB Created: 2020-10-24 17:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 175ef4b8c145e2c38caffb2069da65e8 SHA-1: 4e2610109621cbe5577f6b7b1762704344087d3b SHA-256: a8936707c92f32c80b09cdf3f4ee88fdf0573db89c58ae9a801a3cbf55062ed3
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://ggtraff.ru/pify?keyword=tenue+de+ville+homme+2020+pdf In PDF document text
    • https://delujopasetew.weebly.com/uploads/1/3/4/3/134399242/denuxowumogena-kotobegisebaveg-jomitetej.pdfIn PDF document text
    • https://jakemujilofadam.weebly.com/uploads/1/3/1/3/131380171/b20ebaed.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/wotareropajewub.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/1163193.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/fibutejugedutobi.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/573426.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/silewimufejuvag_gasodederefipo.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/luwavoropudavobo.pdfIn PDF document text
    • https://dozasasakebo.weebly.com/uploads/1/3/1/1/131164234/6894170.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/pumufumaz_dekexijejiwisik_tijibipewiv_zefov.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/8709547.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/kezonezabam.pdfIn PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/1804300.pdfIn PDF document text
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/warokujejiw.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/1/0481/7616/9109/files/81269398695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/4758/3383/files/xawimefejikezokizenig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9712/0676/files/applied_petroleum_reservoir_engineering_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7236/0093/files/64596824014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/6479/9644/files/68465465506.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/rational_and_irrational_numbers.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/nekevexulevefaragonuje.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/aphis_gossypii_glover.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/bimiworanux.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/tratamiento_de_alopecia_areata_en_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/99292836384.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_off00006d74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 5080 bytes
SHA-256: 8963590a244b1d1cb3c2f08f6cde9367073b52f8f0db89eb7208bae96610864f
font_01_sfnt_off00007ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA7 11724 bytes
SHA-256: b7834738e2ee67c24698fe9ed6b06850165bd795bededa87b5364ed17738fe33

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