Malicious PDF — malware analysis report

Static analysis result for SHA-256 d69113a90617024e…

MALICIOUS

PDF

39.0 KB Created: 2020-11-01 05:42:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 67efc1aee40a334994ccafc342110db5 SHA-1: 1ac46e35e4c86b37044984baf472afbf0a3bb1a2 SHA-256: d69113a90617024ef6c24e5089ad7bb8baa39a49a9eb7ff860654f3ed1746e25
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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/aws?keyword=electric+fly+trapper In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_5f9b9733786c6.pdfIn PDF document text
    • https://kogatakuzomaw.weebly.com/uploads/1/3/4/4/134444425/jiminikexeso.pdfIn PDF document text
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/b6efe1b3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f873e1e25439.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384483/normal_5f94bb68380c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4229/files/jubadererixiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0508/0793/1048/files/los_cien_mejores_recuerdazos_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9356/6648/files/are_you_sleeping_baby_in_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8406/3937/files/8946574676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9335/files/display_in_html_without_toolbar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2750/2508/files/topapasexotomilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/3808/0668/files/arcosanti_paolo_soleri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/stick_rpg_hack_codes.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_off00005b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B35 4888 bytes
SHA-256: 4195d702f89543c95e4652445d701eefd7394e4bee629fa44c151f03b5244099
font_01_sfnt_off00006bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF7 10480 bytes
SHA-256: dbca513a7f60291c464a09d0d9ee08a08e2cd1e722d15cd2de3eae46275e33af