Malicious PDF — malware analysis report

Static analysis result for SHA-256 0491879ba50b8657…

MALICIOUS

PDF

45.0 KB Created: 2020-10-15 11:54:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5e97a0095bac50b18f3d7df0a28cd247 SHA-1: bd4dc394e875961e007751660d1cd39cf8e22115 SHA-256: 0491879ba50b8657b6869e3afc66cd8514236497e2530206a8e1f1d2b2b742d2
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=aristofanes+las+nubes+pdf In PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/fb2233a12.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/xojajuv-mitegejitokuxig.pdfIn PDF document text
    • https://site-1040092.mozfiles.com/files/1040092/63966934294.pdfIn PDF document text
    • https://site-1038387.mozfiles.com/files/1038387/52193558282.pdfIn PDF document text
    • https://site-1040321.mozfiles.com/files/1040321/75986477580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f87627a152f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8746cdea44c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366655/normal_5f872d3867bfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f874c6b4ed4b.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/1/0496/1897/6932/files/13016837552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/blood_on_the_river.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6344/3101/files/iglesia_bautista_betel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7766/4413/files/88091898909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/9955/2663/files/winner_take_all_laurie_devore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8962/files/dugisovuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/p90x2_yoga_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d04075-71ad-4a80-aec5-e4986be05af9/tozumogukodepis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/552c75e5-a52d-442a-84a4-faf00c38f574/53814750830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca7a962-b4b7-40fa-b923-8a23ce09947f/99851683907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6672883c-5075-4ffc-8349-4144a62423b1/6935251258.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_off00006ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFA 5164 bytes
SHA-256: bc9a38d3523bd2eb754469494d3d2dc2dc166d010bf24955827d42a195271222
font_01_sfnt_off0000818c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818C 11500 bytes
SHA-256: 0239791c37a43ae5c52fb8fb7e4b10b666eb4e07104486ee5500714601d7525f

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