Malicious PDF — malware analysis report

Static analysis result for SHA-256 6025e3510dd13d8b…

MALICIOUS

PDF

43.3 KB Created: 2020-11-09 14:15:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5163a8d94378447380c95f5cf4a0e7e6 SHA-1: 8a645760b5ecd022848c334fadf6cb127735e100 SHA-256: 6025e3510dd13d8bdec55f66bba845ddcaee63868b8d0979a23b3035ae8ac9d3
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://traffmen.ru/123?keyword=download+nova+launcher+prime+free+apk In PDF document text
    • https://gefelamanak.weebly.com/uploads/1/3/4/3/134353999/panola.pdfIn PDF document text
    • https://rubuxunixo.weebly.com/uploads/1/3/4/5/134518382/logeke-vabigugu-jinet.pdfIn PDF document text
    • https://biparobotimipus.weebly.com/uploads/1/3/4/4/134498468/6518561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450248/normal_5fa20f0179cb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f97b42a15b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375716/normal_5f8aaf85bbd70.pdfIn PDF document text
    • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/busaxes.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/9276785.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/balibusoxuriduze.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/movav.pdfIn PDF document text
    • https://gifitutopa.weebly.com/uploads/1/3/4/4/134470147/jufafedotexo.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://s3.amazonaws.com/tujeviwakirawu/69955896409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47044a97-9b16-47d8-b99e-40fab552c2bc/xopofebove.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_off00005c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5D 5236 bytes
SHA-256: b3802b7936bb643d5952813e1e4369ed09cdd4c1845c2818989a38db5a9aae45
font_01_sfnt_off00006e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0B 10140 bytes
SHA-256: 740291b373c01dd9fbe7572c90abe6defc04ab8a766b7969bba6e5f8cdc3fa02
font_02_sfnt_off000090a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A4 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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