Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c7e57a1b00cfda1…

MALICIOUS

PDF

59.3 KB Created: 2020-10-16 10:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a4f27b22cd289b29ae55a90a257ef16a SHA-1: e81182a143a8a9f329d9e25b3aec65595e67b4c9 SHA-256: 9c7e57a1b00cfda18b538baa3df4e3e0b70ad0216007ae6259d35b103f156f13
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/strik?keyword=excalibur+food+dehydrator+9+tray+instructions In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • https://paguzijap.weebly.com/uploads/1/3/1/4/131453408/34bb4969e43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f87171b25bfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369495/normal_5f88854e68f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f879d3b350f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f8708410f941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f872c78a87fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373248/normal_5f88989e71755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f86f8a99fdf0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f87351191f1a.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/218b302b222536.pdfIn PDF document text
    • https://wurikosaradusif.weebly.com/uploads/1/3/1/3/131384544/besazisiroz_zasepezisobot_gaxelegufepob_rimifep.pdfIn PDF document text
    • https://meboguvogo.weebly.com/uploads/1/3/1/4/131437667/3518902.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0480/0515/2917/files/harry_the_hamster_2_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0931/3438/files/taco_bell_nutrition_facts_crunchwrap_supreme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4010/7417/files/sugar_bowl_snow_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7701/6483/files/paxisisixuvusojasemujeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6088/7203/files/21958733454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/706b78b4-0d50-4ae6-a58e-e15f9454dcfc/3074930518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37783d2-bbd9-495a-beb8-bbc0ca4b3222/dufopagawa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7962449c-9e90-4ccf-89db-c4d392262c28/kevurosuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/676b5567-9a18-4282-afbd-f340a61b4e44/30406701708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d5fef5a-6c30-4cb0-967b-f4986b3c7d05/dower.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF1 3100 bytes
SHA-256: 51498fddcba75a5403bcef5d05660937e53c44c5afa0560f66f7b3741ccc6594
font_01_sfnt_off000075ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75EF 5412 bytes
SHA-256: 854314f0893a5c98d23a123398bfa3179d8ca00f26109f2cb3f15d7277c7eee8
font_02_sfnt_off0000884c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884C 15620 bytes
SHA-256: 042784c28b9ba529c9329be8e2dd2318875e53a877c1a067e7d3a12c939b68f2
font_03_sfnt_off0000b929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB929 16300 bytes
SHA-256: c51f050acae333d53891c00bb867fea37932d62bf7b7c38d93e83655326f88c7
font_04_sfnt_off0000cec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378