Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d0fbc64f52622c…

MALICIOUS

PDF

36.2 KB Created: 2020-11-06 05:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 3d0e0eda7379fedb029a86dffe66fca2 SHA-1: e2f2115b05edb1d86f478df0b651e70382cf1fdc SHA-256: 87d0fbc64f52622cd306fe3c4851679ce101f3c0827d0d88544e73754e8a59d4
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/123?keyword=rubbermaid+fasttrack+6-10-ft+closet+kit+white PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403260/normal_5f9209531345d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5fa020fc8f06d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445550/normal_5fa4a235d97bd.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/pazerogasarinu/80310682133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/4410/6937/files/11947701737.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/attracting_and_retaining_customers.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/67932808884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f8ecdd5-ecd6-4133-be6b-353ef88b3ceb/download_zindagi_pyar_ka_geet_hai.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/53440532506.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4291ee85-0cd5-41f3-aef4-ecd49757bda8/93668572047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3519/6067/files/58771544107.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/kikasavag.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/mommy_i_didnt_do_it_cast.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_off00004b00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B00 5944 bytes
SHA-256: 06b0e5bdb565539db65d660378d8bb61c13eaa3ba3e0f459d20be808cf8dd7b9
font_01_sfnt_off00005f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3A 10916 bytes
SHA-256: 1c454acdbc289b5e2a47cabd5f912d5f2bac6bcaf79348c9231ca2ff6bd3e75c