Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7265ef5f4a945a0…

MALICIOUS

PDF

44.1 KB Created: 2020-11-07 14:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 506c836e9eae7736e01d6752751e322c SHA-1: 37013d0786b8c983f6ea3dcd02f1f5cd74af26ee SHA-256: c7265ef5f4a945a099fa739bc7238e8f6b950bbf1eeb082d5a9fc68a17fcacd7
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=zombie+football+games+espn PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379371/normal_5fa598ddb77ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420612/normal_5f99cc599dc49.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/xepop_zulajado.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/nitatotol/pirates_of_the_caribbean_elizabeth_father.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/63394014856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/091b410d-88b2-4d3b-8603-6d72ce96888c/wenosofabek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4c1f65-1117-43fa-9fbb-ce4c439b28bc/malesox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5153d3f7-86a9-44a5-bb4a-1bc0f73527dd/general_computer_knowledge_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/kegefenazutexolevafujego.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b0fd63-beaf-4c93-97e5-d28dc6dc79ea/49280795101.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/54758676118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b05b6d0-d8ef-4d41-b397-cba62f56b9ae/sims_4_breast_slider_mod.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_off00006e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 5224 bytes
SHA-256: b578953a3037f467efc7be96e2938034d1183eceb5a37a6f739f635e4feedba7
font_01_sfnt_off00008036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 10296 bytes
SHA-256: 46e23eae4eebaa611862816a87c21442f1647563f0f190547a3041b88109670c