Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e48d9bbcad159b…

MALICIOUS

PDF

38.2 KB Created: 2020-11-09 02:21:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 20a3e0ea2d50907544381b4de4f01d2a SHA-1: bf50b375a63cdfa607cd4a09f21155f54def8483 SHA-256: 44e48d9bbcad159b44fd22f88156cf98c66b2ffca0e63ffeb850bcf14967c9eb
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/123?keyword=goggles+of+darkvision+pathfinder PDF link annotation
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/nuvilupax.pdfIn PDF document text
    • https://difomojixi.weebly.com/uploads/1/3/4/3/134319012/4810618.pdfIn PDF document text
    • https://dujenavu.weebly.com/uploads/1/3/4/3/134366251/5827223.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/84c49277-5b60-4245-99cb-acbb86585bf2/63783792254.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/447d4e4c-5e6a-4a13-b2db-17767eb3e732/46051780097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f5cd625-e8f9-4671-a3e5-8f90fb1a4045/82650494893.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/85503766837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd0fc184-4b9a-4fb9-bd24-a278166e29ad/vebuzenogejukenavat.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/jamalagozepunewovulitix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92ac24cd-a639-4812-9ee0-4ca20cf1db58/90860532874.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/93128884843.pdfIn PDF document text
    • https://najoluni.files.wordpress.com/2020/11/51875225117.pdfIn PDF document text
    • https://wanunukine.files.wordpress.com/2020/11/mogewapifogonukomejakipe.pdfIn PDF document text
    • https://lotitogigi.files.wordpress.com/2020/11/81862419097.pdfIn PDF document text
    • https://zereruz.files.wordpress.com/2020/11/dabodesunomo.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/aztec_worksheet.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_off000053d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D7 5456 bytes
SHA-256: 9e387ff34d8bbb47fdd08a8d16ce883d1362b86a1df8528a8e941572800c20e8
font_01_sfnt_off00006670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6670 11028 bytes
SHA-256: 591d47c569543f2bd3d1f473a51fcdbda7c16d9f3f8e387e184f0fa50783988d