Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae718d5812697acf…

MALICIOUS

PDF

43.4 KB Created: 2020-10-01 02:34:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fe655e0479bf60d73eed20db630d0c00 SHA-1: fbeaded6c8e1f844a449e44a10479a6e31ab9d4a SHA-256: ae718d5812697acf7fa21db847d6e15f86a0e518b593fed9e30edaabc64ece17
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=anchor+bulb+holder+price+list+pdf In PDF document text
    • https://site-1036883.mozfiles.com/files/1036883/tixemamawijevobal.pdfIn PDF document text
    • https://site-1037054.mozfiles.com/files/1037054/20572042279.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/61833528082.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/sivofusifo.pdfIn PDF document text
    • https://site-1038954.mozfiles.com/files/1038954/27061356419.pdfIn PDF document text
    • http://files.avayogabodywear.com/uploads/1/3/0/9/130970004/foxotojijatog-rijip-fazasisax.pdfIn PDF document text
    • http://files.esqstp.com/uploads/1/3/0/7/130739740/wasavekaja.pdfIn PDF document text
    • http://files.drivingfordeclan.com/uploads/1/3/1/3/131384656/6047206.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a70685c4-a0f7-49aa-aa75-3ce9e3a42e83/vuwawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36fd8c7b-1ffc-4431-8257-074180ecb8ea/64282729461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa7446c4-8270-468a-8c0a-233d46414619/jutemelaliruxezog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a3eed5-f7e6-473c-88fd-9a4952fd2c59/fufudunedotefevewo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/862363ef-404d-438f-b650-232470986b80/8764466155.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC2 5044 bytes
SHA-256: 7dbfdf2c59a9b215b176b7bcfb15f589a8832f88be23e3be4da853efd97e6624
font_01_sfnt_off00006fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD0 10252 bytes
SHA-256: 7b5608f2d7538c146517cf658ae8ec7dd38f7b3854c18e357c81a5bd31f9e7bc
font_02_sfnt_off000092bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BC 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71