Malicious PDF — malware analysis report

Static analysis result for SHA-256 d643af9df7cb7662…

MALICIOUS

PDF

47.8 KB Created: 2020-10-25 04:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 46210d71de9021279e2a79ae125b0e5d SHA-1: 2d09c44fb58298e86208b5a39da658a29c873e6b SHA-256: d643af9df7cb76625315fa49601bf752908d0cf505b5f3481e25c3e9910d8d70
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/123?keyword=saving+capitalism+pdf+espa%25C3%25B1ol In PDF document text
    • https://nanorobudilason.weebly.com/uploads/1/3/0/7/130775181/mevepubuvugit-guvijitizafi.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/271e84a5.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/tonudiwunakila.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/nivafezapul.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/wadumu.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/3794757.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/bawap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rimepusox/71764091038.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/macbeth_annotated_book.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/nekegeviwelemamojita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce65aae-71ed-4594-bed5-ef4e63a10e73/4410862201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a6797d-f0ad-42af-86cf-cb2a1a2376bf/kill_yourself_borderlands_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/488bf811-bcf5-4787-bdb6-d17e6a6aef2d/memijafupew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/514d1610-427b-4e7b-939d-1f779e4bb1cb/vozugumonuzikuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ab823fc-4dfe-4e5a-b781-8e88e605574b/47190737605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/986c904f-ba85-461a-8d76-6d791b08904e/kotirevaropoxuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c92424-a405-442b-a341-cc148587e971/zekametozaxidaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f09746-e63c-4ff0-967e-1f04d2f6aa59/80763029892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572b162b-ba97-4ce8-8bd2-a4cd0f06003f/662631789.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa591977-41a2-4dc5-bff0-e3b8bd6d007f/penemal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4dcf288-3ba8-4dbe-95a0-654aa862797e/wevojalofalanupokilefujug.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_off0000758c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758C 5752 bytes
SHA-256: a08296a7ab448fe24b476b796c39a55bf90bf58c5d96fda1fc0e4bd90abc6037
font_01_sfnt_off000088e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E6 11712 bytes
SHA-256: 86edd9e3b1884fc3f1166138208f0cd303c4fb11cf5143699ed4d10652cf04fb