Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa5eac5ecc97aeb…

MALICIOUS

PDF

48.7 KB Created: 2020-11-08 23:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: ead752ea6d957cae81cb3f2b3f152371 SHA-1: df652d8a3098aefcef2a2e062f916cf6d94646ae SHA-256: 2aa5eac5ecc97aebb4fd8c7b14f147efa55ad5b72fa3efaf016b767f69283efb
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://traffine.ru/aws?keyword=merge+dragons+cheats In PDF document text
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/7289680.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/mevubime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5f9a4e081747c.pdfIn PDF document text
    • https://pofewapat.weebly.com/uploads/1/3/4/0/134018592/dijuwi_zananula.pdfIn PDF document text
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/wazenekopete_tufip_jukoxonapuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5f88b41468a01.pdfIn PDF document text
    • https://kizekusoviwo.weebly.com/uploads/1/3/1/4/131453028/dozexuzirujuvagaxawa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5f9a16ead0541.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380522/normal_5fa7e04707166.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387410/normal_5fa335504b8c6.pdfIn PDF document text
    • https://diriremipujuna.weebly.com/uploads/1/3/4/2/134265666/digipaxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kuboki/small_unit_tactics_field_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16f0594f-07e0-43f2-928a-0ab1d9f239a1/rejidowugabef.pdfIn PDF document text
    • http://hyperurl.co/9vjd4nIn 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_off00007e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7E 5172 bytes
SHA-256: 9c24b13eec56239e7a6152a306329d1447fc98670eda3b5e433cbd28dca8cc4f
font_01_sfnt_off0000901b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x901B 11180 bytes
SHA-256: 88f06cb6f39782abbc4cfda6234a67e39a7a8c77715189235a7634241288071b