Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea49d4189c8658de…

MALICIOUS

PDF

42.0 KB Created: 2020-11-06 17:03:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 53cb302e5728b69c4fb3bfe5abb8b9ea SHA-1: b20de33ce9efd4d7343d07d59b2e2e8c154b74a9 SHA-256: ea49d4189c8658de54f8f5924c363c22f973523fdfb0eca5150811ae17bbaff0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=the+man+in+the+water+crossword+answers PDF link annotation
    • https://fidurelofomus.weebly.com/uploads/1/3/0/7/130740547/takupudoxuzotanaj.pdfIn PDF document text
    • https://getugegifajit.weebly.com/uploads/1/3/4/4/134481189/8509207.pdfIn PDF document text
    • https://nutolifawivu.weebly.com/uploads/1/3/1/4/131437776/dubigez_moxopasupalo.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/mixeno.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d0d0f7-def2-4913-8c61-c74c211e26c7/44873498058.pdfIn PDF document text
    • https://gogajajar.files.wordpress.com/2020/11/48539197016.pdfIn PDF document text
    • https://ribowazakas.files.wordpress.com/2020/11/97689997320.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/math_symbols_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dbaf9b4-ae2d-47dc-b19e-a9f563f6378e/ruxivonimiz.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/kirby_sentria_carpet_shampoo_system_instructions.pdfIn PDF document text
    • https://fidunonip.files.wordpress.com/2020/11/8625666511.pdfIn PDF document text
    • https://luwoposafepi.files.wordpress.com/2020/11/89671174823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46500b43-7aef-455f-a7df-dfe0b0770695/56119694606.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/grendel_full_book.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_off000066ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66AE 5188 bytes
SHA-256: 499a6c29a8259835df3024c5b5f9623dc7f41c4f89089398a830edb605f6fbe4
font_01_sfnt_off00007832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7832 10308 bytes
SHA-256: fb02f2b6d72fcba022e3792ae217c8a069fca46188bfea9c0aa8edb4b21f265b