Malicious PDF — malware analysis report

Static analysis result for SHA-256 1919ce22c2e2463d…

MALICIOUS

PDF

44.1 KB Created: 2020-11-06 20:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 7db0f3e31423bdce6d67f5ffce578806 SHA-1: 0a55081020ca340378571f9c37d8ad8236215b43 SHA-256: 1919ce22c2e2463d7cdf28adb3d5e7c413d4d3abc925b31e4d655f3f05f194de
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://trafffi.ru/aws?keyword=amazon+prime+video+app+download+panasonic+tv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379034/normal_5f952d0a66050.pdfIn PDF document text
    • https://giginepa.weebly.com/uploads/1/3/4/3/134389182/pupegobinim.pdfIn PDF document text
    • https://sifukimoja.weebly.com/uploads/1/3/4/3/134357082/824a1f636913e9b.pdfIn PDF document text
    • https://semukozev.weebly.com/uploads/1/3/4/4/134493414/tarufujibe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_5f9e5b8d5dc88.pdfIn PDF document text
    • https://luwiritogejoti.weebly.com/uploads/1/3/4/2/134266422/ruzutugujo.pdfIn PDF document text
    • https://vuvajufuzuno.weebly.com/uploads/1/3/4/4/134480129/7547750.pdfIn PDF document text
    • https://maviruwatibifiw.weebly.com/uploads/1/3/4/4/134490209/lamevifexara.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383921/normal_5f95177de0d92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422631/normal_5f9a7e7ce8f20.pdfIn PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/2006625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405660/normal_5f956a3d0c33a.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/4f3e7b76-95ac-469f-8e51-1eebc239ecde/fundamentals_of_applied_electromagnetics_6th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78ef505f-4b14-4916-89d3-b7066f7528c1/xaxavezib.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_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 5408 bytes
SHA-256: 10f9d28985872b96de7b4ca24fab88c946d0211902710915babbcc02d1c6730f
font_01_sfnt_off00007553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 1552 bytes
SHA-256: 1ea35802d51d2f667024628658f611de8204f9eac35dac6c2e3952233ceeeafe
font_02_sfnt_off00007d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 11136 bytes
SHA-256: 0f5034415a071ccd056fbac613f33f454da518eb9355924169ef52ee01ffab45

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