Malicious PDF — malware analysis report

Static analysis result for SHA-256 543e3cdf0b51f5ba…

MALICIOUS

PDF

45.8 KB Created: 2020-10-15 11:43:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3ae994d97b727c4562f0e3fbdf70ce88 SHA-1: eee2cd610e9106d889304f661b9628aad56052ed SHA-256: 543e3cdf0b51f5ba628969c09b9cb212b14f436bd7a955ebdf62f7906c2e9153
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=isuzu+d%2527max+2020+manual+pdf In PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/0dccf6cc0ac261.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/22d6c75a10.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/judif.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/80db941676d0.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/7989682.pdfIn PDF document text
    • https://pebiname.weebly.com/uploads/1/3/1/4/131453048/9243459.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/4d2f17ad71fb9.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/501417.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/4277333.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/timufimaxakiwozo.pdfIn PDF document text
    • https://worobewunit.weebly.com/uploads/1/3/1/4/131406731/ceef4e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f876f345c3fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369511/normal_5f87c5e968a09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5f87baacc7ff7.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/bumumobo.pdfIn PDF document text
    • https://wepeweguwerixum.weebly.com/uploads/1/3/1/8/131856135/zugilafoz-melowotalixu.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/pujosadugebafimeduko.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/nodelorofe_ritizolomireku_gavefava_jafilovolideke.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/206302.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/af97af0c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/8742796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00006cf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF6 5456 bytes
SHA-256: 8a07a0a4f75f1cd5e1ca4a5d4dd870551b5070169fd9bc0064fb48a9a54c0e9d
font_01_sfnt_off00007f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7F 13588 bytes
SHA-256: 377b84dcfcb4018a40bdf881e0e3ba801b04aba2c7453dda3a98a7fd8aaba463

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