Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaf154b59818f7b5…

MALICIOUS

PDF

51.5 KB Created: 2020-10-15 04:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1f592651056d140135f58686ded2b076 SHA-1: f6676327c323842a84eb9850c1f75d0acf763261 SHA-256: eaf154b59818f7b529f0abefa63e24f4e43b4cca902fc21dbec2f6ab20d00118
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/123?keyword=heterogeneous+system+architecture+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f879f8062d68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f874999dbad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f876ef6d6c34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f87847335fa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f879af0adc77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f877d41ccb2a.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/aaa28a43.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/2185233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f87231087fe2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f86fad88c1d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f8730e4c54bc.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/1/0483/4594/0128/files/kingdom_series_chuck_black_movie_trailer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3574/5182/files/vamimef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6304/9879/files/55089337729.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/3949/0726/files/google_material_design_android_app.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C8 5600 bytes
SHA-256: a19f04edaa3e7be0e5d7d55c8552676ce494a6564f6b61fe95cdcb7c9e1b0f1c
font_01_sfnt_off000093b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B1 14220 bytes
SHA-256: 4f250179e0c89459e1f4eada8950d6b338608308e601394ef6f4f9bf9be67908

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