Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f34dad07a74d376…

MALICIOUS

PDF

43.4 KB Created: 2020-10-15 04:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 616b71cb96e780e2bb0bcf38d4b56f94 SHA-1: adcc8316eaeaeca3a6e3477700a2ccff58e8ff42 SHA-256: 2f34dad07a74d376346c6262706ce222e20aede9ce2380e93f263840e359330b
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/123?keyword=14-1+human+heredity+worksheet+answer+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87a3fec0e32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f87513aea873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365638/normal_5f8710d036bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f8774a1c100c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f878a0f003c3.pdfIn PDF document text
    • https://site-1042940.mozfiles.com/files/1042940/12091847907.pdfIn PDF document text
    • https://site-1040888.mozfiles.com/files/1040888/pufowedixojagotufeda.pdfIn PDF document text
    • https://site-1039533.mozfiles.com/files/1039533/pipaxe.pdfIn PDF document text
    • https://site-1048445.mozfiles.com/files/1048445/narayana_kavacham_malayalam.pdfIn PDF document text
    • https://site-1044455.mozfiles.com/files/1044455/18756039425.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.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/2e236ad2-99cd-492f-8005-1d06eccbab08/92149352516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/858bafea-b911-4850-b20b-7fbb80ffda33/tagufewumado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/411b928f-8d5e-4eb3-a220-4afb931ec0da/vasapibifupasemajax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1ee78f5-79f1-4f13-a0f6-ee163dacdfe9/goselidow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d156c1b-b685-42b2-b7dc-a094f58027ac/dulimuneviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68746aa5-a027-4a7d-8b4a-6515694a59a1/xedesinevarewogupoboside.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84ce5a72-1132-48f6-8042-428f390a06f8/xoraloladanalozozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fafed6e-2834-4929-ad8a-a9b1cf23ebb6/7016920819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1289af7a-b871-426f-9935-c22e6b78992a/zujowuwubomezikumesegefuz.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_off00006a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 5368 bytes
SHA-256: c672e64ed105a9ed8619a0978b3ddd61ff4584b158f86cf28e0fa6de7f955d9b
font_01_sfnt_off00007cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAE 10532 bytes
SHA-256: 151bac534c50ca3b01fc698b7504b51cd359340379db98339da88b1473b87511