Malicious PDF — malware analysis report

Static analysis result for SHA-256 b065231b6d9d2c86…

MALICIOUS

PDF

40.7 KB Created: 2020-11-07 03:34:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b7f267c7c5adf63308dd4e57908f1fc5 SHA-1: bb40a6383d7c362bfe07a63b9e1a1786d9d0f021 SHA-256: b065231b6d9d2c8626e52aa8739fcf91e6c9202b3b80587cb09a199855cd908b
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://traffset.ru/aws?keyword=configure+intervlan+routing PDF link annotation
    • https://lezunodukulo.weebly.com/uploads/1/3/4/3/134341823/guzikorikifikesilak.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/5247394.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/xuxukivikifo_kifitan_muvazu_wexababadevevo.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/kuxutewubipujotuga.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/8233311.pdfIn PDF document text
    • https://vatalinonabalix.weebly.com/uploads/1/3/4/2/134234662/8436233.pdfIn PDF document text
    • https://werevofapopaja.weebly.com/uploads/1/3/4/4/134492388/netuwolizadufinesek.pdfIn PDF document text
    • https://rugeponejap.weebly.com/uploads/1/3/4/4/134487210/wazubajex.pdfIn PDF document text
    • https://kewidavarij.weebly.com/uploads/1/3/4/6/134696647/kewibovu-lejaw-nuzatori-mamagaxu.pdfIn PDF document text
    • https://saloramorolo.weebly.com/uploads/1/3/4/3/134307331/7772413.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/vaxukekiwurefebe.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/24bf3148-f50b-4f26-9004-0459389c1421/lyrics_lead_me_guide_me_elvis_presley.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/axis_bank_blue_chip_fund.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_off0000606d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 4720 bytes
SHA-256: 9f216b77a30402ba57846ed60dc0268fe846e41831dbb935f82df4b5fb9703de
font_01_sfnt_off00007097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7097 11232 bytes
SHA-256: 0ecd1431a3bec20527ffb5766087b6f5e00c9a73879e310c65cca2ecb7fbd5b5

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