Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1365f554d9b27b…

MALICIOUS

PDF

45.4 KB Created: 2020-10-02 12:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 97aa396b105236f3f128b19db23c8b78 SHA-1: 6912796bd806801e3cc660756780c9f58ae5ea02 SHA-256: ca1365f554d9b27b676242e18564648eb54a55ccc7d3138906239acbd2a2f5e3
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://cctraff.ru/strik?keyword=lumion+7+toolbar+missing In PDF document text
    • http://files.eriedips.com/uploads/1/3/1/3/131380616/1831600.pdfIn PDF document text
    • http://fisowos.robynmichon.com/uploads/1/3/1/4/131453630/kadiwizate.pdfIn PDF document text
    • http://files.carrollcountyfarmersmarket.org/uploads/1/3/1/6/131637108/9318795.pdfIn PDF document text
    • http://dujobum.embersnightphotography.com/uploads/1/3/0/8/130874104/7305790.pdfIn PDF document text
    • http://files.lofos-apartments.com/uploads/1/3/2/3/132303175/ff898a4240.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/df59d290-a34a-4000-b180-5cdd06fd1e06/xerusobizululekidazov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8b4f876-7e1b-4e8b-8266-e0a2abd5e194/kizegetofada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce66270f-2afa-4eed-873a-8efb9074fc5c/kujobefarudakiretixolifam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21aca86d-e020-4fda-815d-c644092512be/48661619420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8caefa42-ea64-4ed3-acfc-2b9fc19b8dc4/57236091903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d236e798-f454-4425-ac31-e29b53462609/refezajojiposejobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceb7b2f2-5657-4798-9e61-951d8d1ad2bd/maguke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e3e0c4-ecac-44cf-ae33-ae537515ab21/gibopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c74592-8f84-4020-9727-4e9269c4c547/56436202739.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd89fbbb-558d-419d-87d8-7f26bcab8e6c/24764238281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/f2p_strength_pure_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/plantas_de_sombra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5251/7534/files/tafuvozifejovadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9431/8497/files/salt_lake_city_tours_from_the_airport.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9336/0791/files/bell_hooks_books.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_off00007416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7416 5168 bytes
SHA-256: 51e9009ba6a120636ab745e1d5b08ff8314f731e4f2b7553b468eb19068669d0
font_01_sfnt_off00008599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8599 10308 bytes
SHA-256: b9c7e691f876685884f6b90746d4c1dd4d9cdb2d4d109ba752c97968cf8ab946

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