Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6a6f55ec320978…

MALICIOUS

PDF

43.8 KB Created: 2020-11-06 16:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 79265e920d4ca036c83f560e80e32927 SHA-1: 095b158fb029014d16b09e51b8aa194271103c33 SHA-256: 6d6a6f55ec320978921266a133dbb92164c0e624592ae6d5abbaa1c9366fc6bf
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?keyword=tramontina+6+pc+induction+cooking+system PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393625/normal_5fa3049b9a5ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417809/normal_5fa2a41a01d36.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/maxarox-tamepiwa.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/xirijid_porozuzu_nebiduvasexa_zivesuzavixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_5fa423f81a728.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/2844f2611da22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413843/normal_5f989a9744abe.pdfIn PDF document text
    • https://luwigemo.weebly.com/uploads/1/3/4/5/134597726/terurinidi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_5f93ced1489ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_5f96fee542e4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410717/normal_5f9da2b37efdf.pdfIn PDF document text
    • https://tuwijojax.weebly.com/uploads/1/3/4/4/134477229/7717e2f58.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://mutozofe.files.wordpress.com/2020/11/65548376527.pdfIn PDF document text
    • https://segokaguwun.files.wordpress.com/2020/11/84517655789.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_off000058dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DC 5512 bytes
SHA-256: 780e2ed4264cdb1a8760f46b1515599574c52c55a364d3b4c359bd5a65ff3606
font_01_sfnt_off00006b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B80 11472 bytes
SHA-256: 2e9622604fd6e8adff4c92082237d717e829f20f3c03ee2e6a9061daa82a15fd
font_02_sfnt_off00009225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9225 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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