Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35e283951fd49ea…

MALICIOUS

PDF

49.1 KB Created: 2020-09-29 19:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 8b403ed7428bf33faae6c11566ccfc68 SHA-1: bdcf1da4fa1d8587d5f2ab1ccf096cfc5577c872 SHA-256: d35e283951fd49ea183b97ce56aa3445a21dca02307f5f66a4d624257713aafb
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://gettraff.ru/strik?keyword=ap+budget+2019+in+telugu+pdf+free+download In PDF document text
    • http://files.tierecords.com/uploads/1/3/1/4/131410736/wufanekag.pdfIn PDF document text
    • http://ketupod.jenniferpricedavis.com/uploads/1/3/0/7/130739349/genupupabakoxa-fukasukotu-ruvimalojar.pdfIn PDF document text
    • http://kafijik.ketsup-pinoy.com/uploads/1/3/0/9/130970003/vudivapikipexe.pdfIn PDF document text
    • http://sutebob.popmovee.com/uploads/1/3/1/6/131637352/e5dfbc.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/milaginujamoxorisikuru.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/fozuzokubevu.pdfIn PDF document text
    • http://files.sirihammond.com/uploads/1/3/1/4/131437689/jolosuxupe.pdfIn PDF document text
    • http://files.baobabtreestudio.net/uploads/1/3/0/7/130776276/3891209.pdfIn PDF document text
    • http://files.glasloughschool.com/uploads/1/3/0/9/130969607/konujadagosovis.pdfIn PDF document text
    • http://files.sereathahouse.com/uploads/1/3/2/6/132683328/05a5455c5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/a192389c-e417-47e2-8e0f-7aedc9eaa047/fewomomojuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e42251b-ab3d-4219-aced-90bc47ddd1aa/dabigedizu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35183ca8-b777-4798-8620-b94fdb77af15/wakanuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07c150c8-7f5f-4814-9815-a4eb02fba53a/98846706030.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_off00006641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6641 5732 bytes
SHA-256: c8c9b3bc1f074ce9073175bc257f2d2ab54feb4770821c3e1f873e73e4c9b931
font_01_sfnt_off000079e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E7 9700 bytes
SHA-256: 57341e853d994051a63b33ae6c2a4d298bafada5fc3956407b85e021fc624226
font_02_sfnt_off00009554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9554 9864 bytes
SHA-256: f95b59ffd0460f480c7826defd26d3c0bab7fc34c8c49f4375f5adb6fef3045d