Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be367529053bcad…

MALICIOUS

PDF

37.7 KB Created: 2020-11-05 22:01:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: bc8b363f454bbca782ce6ca2a757dcca SHA-1: afdfce30b28702b041e45bb598ca28a764089fab SHA-256: 0be367529053bcadece4ad0b50ea434ed97f2ec5615f6e4dbe5ef85aba9e371d
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=youtube+percy+the+pale+faced+polar+bear In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380078/normal_5f8bff679edba.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/filamovebitojiloxevo.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/sixenomowukonaj_labelo_tigigobuge.pdfIn PDF document text
    • https://giximelet.weebly.com/uploads/1/3/4/2/134234701/tokasalorumin.pdfIn PDF document text
    • https://jesebumu.weebly.com/uploads/1/3/4/6/134617302/7207243.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/kuvawidifakurabebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/119171f0-dd68-4de6-8473-9715081d5d08/kvalitne_matrace_akcia_kapsule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a5429d-7fd9-4d27-a90e-d4e4ba511cb1/juremulusukimu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d2324f-bccf-47fe-b942-98a1ff57717a/jatedetakizivaxonuxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/5989/4184/files/6542040935.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/rejilexinijop.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_off00005528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5528 5268 bytes
SHA-256: 338035ca25dd32169207e662fbb2a500665ac7cdd7acae15d02b0c4d0a7d18db
font_01_sfnt_off00006716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6716 10352 bytes
SHA-256: e2d2d4a736aeefaf04638c7b46720db0900592b04ccb864d8630e2c140a4e7aa

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