Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d833f72397305e…

MALICIOUS

PDF

46.3 KB Created: 2020-10-21 01:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 56b6629e321c40033f6e56060a6fa6ae SHA-1: 60a62915dc9103dff5c0c4fdefc457ff520bd5fc SHA-256: 00d833f72397305ee32b7807227db62a48ec606f48f25c61445fb8f202ed3e1b
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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/strik?keyword=entrevista+psicologica+laboral+dibujos In PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/newovinipe_kemirasalij_jisolomemavep_sobur.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/7210149.pdfIn PDF document text
    • https://xuwuperozaposa.weebly.com/uploads/1/3/2/3/132303395/kokajesalasefokez.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/1d98cb377cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f8882dd1da99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383912/normal_5f8c86136c33e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f89182e1ddac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f8d2adf51923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5f8b9dcb264d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f87214ba7c06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/835fb621-6e77-43cd-b6e0-8158c2c8776a/fatovivavi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5d9bdf2-c797-4184-b545-fdb2639c972b/97725219131.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5665964d-699d-4b61-beda-092b7a4998e5/xivigowavakibigetuwakow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9502cf83-6f0c-4566-bbd4-d31bcd8c070c/21213694394.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d177b0-6a0f-48a0-9c78-06472ba021d3/58611531637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/157de576-31b4-457e-8b45-4f915b7c7e27/38639106810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71603d7b-f46b-46f1-868e-02c05dc58004/84342069198.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_off00006677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6677 5356 bytes
SHA-256: 927fab5f1345a0d78a4e63a65cde77ab870aa7d9ce81d64e075cb2d495d335af
font_01_sfnt_off000078b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B6 10972 bytes
SHA-256: 8d515773354f5c0eb7672a391c53992a97a72c4e2e066a6d49e223cbf28d89e2
font_02_sfnt_off00009c66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C66 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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