Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa1e909730d17d7…

MALICIOUS

PDF

46.5 KB Created: 2020-09-30 04:04:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4ce5f97c8699958af8eb0495084352cc SHA-1: f937cbcd4ba2e27e73fbc04483309a83e9f5132e SHA-256: cfa1e909730d17d76c01baaba3688ec9e8dd9caae21254ae2aabbc4926f7a519
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=13+attributes+of+allah+pdf In PDF document text
    • http://files.mrpultz.com/uploads/1/3/0/7/130739095/jogosaje.pdfIn PDF document text
    • http://fimubewig.christchurchfernie.ca/uploads/1/3/2/3/132302857/fobodijixi.pdfIn PDF document text
    • http://files.pinehillinthecatskills.com/uploads/1/3/0/7/130738821/2cd1417c3c8057.pdfIn PDF document text
    • http://kuwolad.maryshousedc.org/uploads/1/3/2/7/132740837/wofate.pdfIn PDF document text
    • http://volusiku.zgultimate.com/uploads/1/3/2/7/132740218/bapedikexa-bomoromenezuta-vabuli.pdfIn PDF document text
    • https://site-1037262.mozfiles.com/files/1037262/94114598895.pdfIn PDF document text
    • https://site-1037884.mozfiles.com/files/1037884/bosumijawukosanesug.pdfIn PDF document text
    • http://vetek.electricmoonmagazine.com/uploads/1/3/0/9/130969572/3330efa88.pdfIn PDF document text
    • http://silinas.assuringyourcomfort.com/uploads/1/3/1/4/131408738/xupixo.pdfIn PDF document text
    • http://sejebola.vintagepercussionsoundeffects.com/uploads/1/3/0/7/130740000/xiguvaganasiwut_suwaxagodomed.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/1/0432/9259/0236/files/rectangular_form_to_parametric_equation_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/torodojole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/6835/8555/files/xovebolekixafab.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_off00006f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F74 5392 bytes
SHA-256: bec834c525e54066765e583bf1111dd46a4777e3450f9905e8e159dbf6c51105
font_01_sfnt_off000081ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 13856 bytes
SHA-256: 0b97dfa2721058a9b3953fdc82f5f7892f3143dbeca1ccf3d4f246a0634fc7a1