Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72a0e23a6f2af09…

MALICIOUS

PDF

43.0 KB Created: 2020-10-20 15:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 44a16d172a75478467760dcdcfd99deb SHA-1: 6694ab5bf6bb837b35c418c3f999e85b953c3eea SHA-256: f72a0e23a6f2af09b5494967517bf9fba550960a47a232ec3d31e385a5b7e405
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://gettraff.ru/123?keyword=download+whatsapp+apk+android In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8925184.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/d0a254741.pdfIn PDF document text
    • https://bezebaterizijir.weebly.com/uploads/1/3/1/3/131384714/vepegesobixuvam-zotadimafawo-mimat-girozades.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/5699673.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/zidebesirolabavo.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/9500027.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/8765852.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/bd4b8c.pdfIn PDF document text
    • https://pisanofinupu.weebly.com/uploads/1/3/1/4/131437881/5345642.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/1/0488/0623/2229/files/vusubola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1130/8702/files/single_replacement_reaction_cartoon_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2551/7720/files/17588603938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5008/1690/files/8627463837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7324/0739/files/lojaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1715de6-0283-4de6-a226-89be643c0c56/ford_f150_center_console_organizer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75278e08-cc2c-402a-ba93-3322138280ba/45739137591.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da0be80f-54bc-48ec-9d42-01c544e45482/zorejafudizekeb.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_off00006853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6853 5200 bytes
SHA-256: d7b889e44e463629692cd1a81ff9aafde087079835c181b6a5048c6e915e12fc
font_01_sfnt_off00007a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0B 10652 bytes
SHA-256: f75e46a523b00fd8af71f6de601ff67b4f5f055170cddd6f9f555eaac87c8303

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