Malicious PDF — malware analysis report

Static analysis result for SHA-256 430e5e6326e330c8…

MALICIOUS

PDF

43.4 KB Created: 2020-10-01 22:41:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6a101938d8e38eb752bf69cb0e5cd545 SHA-1: 62f972161603e35ede2a6b57cbe05f06e8478472 SHA-256: 430e5e6326e330c8d1597c7c23b164d8f06f668f34b2a79c67e3d0298d1069e8
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=canara+bank+nri+account+form+pdf In PDF document text
    • http://moguvid.dronesarus.com/uploads/1/3/1/1/131164093/e172876.pdfIn PDF document text
    • http://xewepito.thundervalley.com.au/uploads/1/3/1/4/131453565/1748592.pdfIn PDF document text
    • http://tideduxuw.primitiveart.online/uploads/1/3/2/6/132681396/pezefijotosi.pdfIn PDF document text
    • https://site-1036839.mozfiles.com/files/1036839/fajoxewofilikekuj.pdfIn PDF document text
    • https://site-1036671.mozfiles.com/files/1036671/88075403985.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/tidavamituzefemabadagugen.pdfIn PDF document text
    • https://site-1036972.mozfiles.com/files/1036972/96253569402.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/937762e0-e53f-45a6-aa25-10aefe64599d/71622538060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69c658f-9bc5-4fe1-bfae-945c960300d2/gejotubalap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2979b22c-140b-41e2-a37e-88cbe7c127d3/nejuduleziwukowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e2ca69-1ea4-4541-a100-69ae3db06547/52958808960.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_off00006c8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8B 5200 bytes
SHA-256: d61cd9bdd9dad9fe48f6a09510837c6fc5832c41a4595d10ed6000278a043d90
font_01_sfnt_off00007e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 10212 bytes
SHA-256: 3d3ad5c873334857e8c1ada002184bee06f35d2e1212f7d58c7334183e441993