Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc047e379d0800a…

MALICIOUS

PDF

34.5 KB Created: 2020-10-30 06:52:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6fc4fa00b8afba6d515b49f115fead8f SHA-1: fc166b6a9c03bd03cfb256d8f5cd03a26b743573 SHA-256: 8cc047e379d0800afdd429a6d9a409f6bef65f1a2e871c1a71b5b383c30480e0
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=john+deere+12+volt+gator+xuv+camouflage In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366047/normal_5f8764c6c5dbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373770/normal_5f91848d42cc9.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/b4477f83-4820-4cdc-ad2d-882e68998621/zudeletokefijunumizoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5033/1043/files/ncert_std_11_chemistry_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/9808/4006/files/figemapuxub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7746/8327/files/buvupiwovujom.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/aramaic_language_grammar.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/neet_pg_2018_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be365a56-7262-4aca-86cf-594b70236fa1/mirutikigesojim.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/census_questionnaire_2019_kenya.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7467cc39-a814-4de4-84b3-68e28a8448f8/play_jumpstart_3rd_grade_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/80918176121.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_off0000460e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x460E 5556 bytes
SHA-256: eff3741982479f0bea48ec66bda84fb1a9f6eac9fa663d86d5a1e462b86dc2b2
font_01_sfnt_off000058dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58DC 10816 bytes
SHA-256: d21735219076be74f0dbf095482ce65ad88f8dfdf3b82b479fe5386c127e505c