Malicious PDF — malware analysis report

Static analysis result for SHA-256 93826ca90b2fbb54…

MALICIOUS

PDF

48.4 KB Created: 2020-10-15 21:32:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ce06d2b8ef2616529a460134c680fb9b SHA-1: 7b6f2c026e28d82205a24bdfcd5f3f436d2230cd SHA-256: 93826ca90b2fbb54bfadf30fb3dbbc41ff67d1ddbf94c2f8948e98b4f1617ee4
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=lifesaver+water+bottle+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f87e60744600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5f881905b1cdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f88673c5766e.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/malizodagasamu.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/358210d4ddf3.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/litasifix.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/niluvozenobe.pdfIn PDF document text
    • https://site-1036934.mozfiles.com/files/1036934/lateli.pdfIn PDF document text
    • https://site-1043132.mozfiles.com/files/1043132/43033500966.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/77424608199.pdfIn PDF document text
    • https://site-1039999.mozfiles.com/files/1039999/74317156172.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7d3707d5d.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/zesebu-tezegige-sonawajubidep-jekijosozurajoz.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/dofelamidagalofux.pdfIn PDF document text
    • https://site-1044309.mozfiles.com/files/1044309/rudiguriliw.pdfIn PDF document text
    • https://site-1040376.mozfiles.com/files/1040376/fugetuwuduxitugapu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7690 5108 bytes
SHA-256: 2a2c34bc5cc4185db789f01b85d01e874f0a20398f5683ae2312b65403ad8def
font_01_sfnt_off00008815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8815 13760 bytes
SHA-256: 4a49c8c07be79028559921ef8a6fa395eb9e61df699fd3cfc3379a8ca384402b

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