Malicious PDF — malware analysis report

Static analysis result for SHA-256 93eeb730f8f23eb4…

MALICIOUS

PDF

49.8 KB Created: 2020-10-08 10:59:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 08ee3c9c67ba6c6e3c74777c556a555e SHA-1: 7bf233ed6ca36456c07c67c960a17a367d4a1219 SHA-256: 93eeb730f8f23eb4ac9ff17d1fcaef6aca051bf2d0fe8b3613766a6bbd662cf3
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=pap%25C3%25A1+a+toda+madre+cap%25C3%25ADtulo+48 In PDF document text
    • https://site-1040443.mozfiles.com/files/1040443/jexesivunumulevufedisuta.pdfIn PDF document text
    • https://site-1036681.mozfiles.com/files/1036681/86933770688.pdfIn PDF document text
    • https://site-1036871.mozfiles.com/files/1036871/16227431780.pdfIn PDF document text
    • http://sodunij.domhawthornmusic.com/uploads/1/3/2/7/132710712/4c39af22c7622.pdfIn PDF document text
    • http://files.composedbycanadianwomen.ca/uploads/1/3/2/6/132682718/pelinewiviluf.pdfIn PDF document text
    • http://guluzowo.llanesclass.com/uploads/1/3/1/6/131606069/fagekafijuvosa_dazoxik_firujitu_vimuladajop.pdfIn PDF document text
    • http://files.andquirky.co.uk/uploads/1/3/1/4/131406849/rimimu.pdfIn PDF document text
    • http://files.jojoamo.com/uploads/1/3/2/6/132682866/8678804.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/1/0499/1690/3585/files/covet_fashion_hack_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5490/9608/files/panuxadiwesusedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5276/0224/files/foldable_paper_cup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1829/7759/files/coastal_wetlands_abiotic_factors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1344/5544/files/diletupoxazupitaredikegub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2624/0920/files/vocabulary_building_books.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_off00008377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8377 5612 bytes
SHA-256: 50b1587ce5f41849a73aabb6ef6c5f61de531aaa9405acc825c9d44a1980c2bc
font_01_sfnt_off000095f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F1 10648 bytes
SHA-256: c21aa4a38e2d6c3f6b4f9b55cb095f249f19c03b9c69e6241edf23a04a363d38

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