Malicious PDF — malware analysis report

Static analysis result for SHA-256 568c7e5f110a17dd…

MALICIOUS

PDF

42.6 KB Created: 2020-11-09 08:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 67a1398230b36708b06b089fe021bb91 SHA-1: ce0ec5bb79bc4a56532f21bc169a9237529d1e6d SHA-256: 568c7e5f110a17dd714af8e1f6204c46776631e1e99b586e53d1225d70546e32
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=santa+claus+goes+straight+to+the+ghetto+song PDF link annotation
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/wasururiwe.pdfIn PDF document text
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/c762637d82786.pdfIn PDF document text
    • https://lefokanu.weebly.com/uploads/1/3/4/3/134377273/9e8f6363ea1c3.pdfIn PDF document text
    • https://fotekexilinita.weebly.com/uploads/1/3/4/2/134235887/bidif-tolav-donotixeni.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/vavale/5304770811.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/995d330a-4cc4-4d5e-ad3c-ad3bda1fb888/95130955779.pdfIn PDF document text
    • https://todalebemo.files.wordpress.com/2020/11/dibujo_tecnico_con_graficas_de_ingenieria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33ac3f1-0657-4db0-b323-45c814e6d8a1/15889787604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79c0e0dc-014d-4cd7-b5cd-f06b935c642b/timing_belt_guide.pdfIn PDF document text
    • https://pazeden.files.wordpress.com/2020/11/86767518253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68aac7d8-9bab-460d-bc64-852126d8f6f9/98088945591.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_off000069f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F3 5164 bytes
SHA-256: 603de96483b72748366860e41ad7a518f97615e6b989a1c583ebd223cd8def08
font_01_sfnt_off00007b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 10444 bytes
SHA-256: f3786759a89494eb0da37742120626db7053fb64247924f9a3f56563a55c9686