Malicious PDF — malware analysis report

Static analysis result for SHA-256 baea8dba17ba9a40…

MALICIOUS

PDF

47.4 KB Created: 2020-10-26 01:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: c4a82085dcf6eb617c3f47ed0b46582c SHA-1: 5df48b3fb512e02f889c05bd32840825758e2296 SHA-256: baea8dba17ba9a409000245775959886feb9c9cf7582963940f21d3056659e9d
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://ggtraff.ru/aws?keyword=economist+april+2018+pdf In PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/78216a32a26cfb.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/3471586ae14859.pdfIn PDF document text
    • https://ritixalasan.weebly.com/uploads/1/3/4/2/134265532/doworo_miwuwuk.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/vuxomotijuwur-getegimineza-gamirad.pdfIn PDF document text
    • https://valetapos.weebly.com/uploads/1/3/4/2/134265584/kipuxupunigibaw_tupotidugofeze_tabivolob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f870baa0aac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369932/normal_5f8d38222a2b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f8f5e593d23d.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/miniban.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/eb845a2b.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/gilamurolopek.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/mevaxapun-pinugese.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/domijedaxixak.pdfIn PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/bizav.pdfIn PDF document text
    • https://mujetuzavos.weebly.com/uploads/1/3/4/2/134266282/aa0c3.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/0e82bd50-271b-49ef-866f-9a76de360495/gexotesiliwibodibakatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9757/8435/files/ziradelozezuguwidebugila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0655/7859/files/12407670834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1362/2936/files/kediborapukufovorifijigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/7000/5663/files/22667625118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5920/3234/files/74054941522.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_off00007762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7762 5776 bytes
SHA-256: 145201457261bbaffea4d7f30039f7851967d7556a0cd9b5b0fc3bd25d0c77b1
font_01_sfnt_off00008aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEA 10896 bytes
SHA-256: 4bceebed273e955c46aa143bbac52342e23eeba150010bce35b0a91c27758431

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