Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e028a52c476614…

MALICIOUS

PDF

48.7 KB Created: 2020-11-08 07:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 8d5aa6ae273a2e28a81135c3f41dbcc0 SHA-1: 5196ecde1221dba741190fd7cb74cb7fd73d1fa2 SHA-256: d8e028a52c47661480dff27b3abd846d0ebdc0e97ed565c2a0b5c459684416f1
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://traffking.ru/123?keyword=eve+online+mining+guide+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5f9659c03760e.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/tadodinad-nakiwovukil-tumuset-lomifatolumim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f935bf14cb17.pdfIn PDF document text
    • https://fetofopup.weebly.com/uploads/1/3/4/5/134507679/zopefifogepilomodig.pdfIn PDF document text
    • https://megoximigiwuboz.weebly.com/uploads/1/3/4/5/134579220/e834242ec1238.pdfIn PDF document text
    • https://totapige.weebly.com/uploads/1/3/1/4/131483287/8344117.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5f98515976c08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f8d1283d475f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_5f9bd78482a63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://tifufojovis.files.wordpress.com/2020/11/87649718104.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e2b88b3-3dee-42c2-a473-990b48e1bc16/619-311-9781-9473_is_true.pdfIn PDF document text
    • https://momuvabixot.files.wordpress.com/2020/11/abnormal_psychology_an_integrative_approach_8th_ed.pdfIn PDF document text
    • https://verozunevol.files.wordpress.com/2020/11/56961110524.pdfIn PDF document text
    • https://favasesufut.files.wordpress.com/2020/11/44986118802.pdfIn PDF document text
    • https://bedirolipe.files.wordpress.com/2020/11/bawufeforita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/571ba2b4-fcc4-42c9-8e2d-e9a1d77507f3/13277055344.pdfIn PDF document text
    • https://saxofenofam.files.wordpress.com/2020/11/27498594556.pdfIn PDF document text
    • https://meniluw.files.wordpress.com/2020/11/zamebigoditikegugusete.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_off00007ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE9 4952 bytes
SHA-256: 146e7cc36b61339ec01cc03a0b3d2987934ecd5999dae632cc123add6848b07c
font_01_sfnt_off00008fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC1 11256 bytes
SHA-256: 780181fe7beb032a7eb9ebead60b991632546e68ad9d21b96b25f5611a96b253

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