Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2707ce8c5181777…

MALICIOUS

PDF

55.4 KB Created: 2020-10-19 15:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 34b1cb9a3875057a54c0d541f599161f SHA-1: 930cc99b7217d3ea71c6ba7e33c9af1570324e7f SHA-256: e2707ce8c5181777bf7eb9b771d165ddde14ffe0ef60bed4f9107496543e94fa
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=jailangkung+2017+watch+online In PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/4606116.pdfIn PDF document text
    • https://vebifejelib.weebly.com/uploads/1/3/0/7/130775119/1c51848932.pdfIn PDF document text
    • https://zotorakiv.weebly.com/uploads/1/3/0/7/130739478/torewedoxeruz.pdfIn PDF document text
    • https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/1347574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387056/normal_5f8cb070f1a87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f874c536c9d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_5f8d0006c9128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f8cf24719402.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/d51d597141df676.pdfIn PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/mupetewovifawe.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/5146737.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/logape.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/1/0439/6810/2558/files/10123274920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c11b9cd-b4f6-4fe0-b8cc-a3a6f4a04c7f/57411456335.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bdc1460-57be-44b8-bc71-ca58b8731b28/texas_holdem_poker_tutorial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/053ba93f-16a6-425f-8e5a-a4ecb1170b3b/10301976886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7564a8d4-a6e0-485f-83ea-42710e8d1c2d/bojuvobele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d7936c-c178-4aca-a5a1-710f69fafd27/safisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195dd2b3-96da-42ff-bd3f-68dc04066529/woparepibasov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0258f89b-9a46-4f9d-956a-ccea40f14595/brave_browser_reviews.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A14 5336 bytes
SHA-256: 8bba028ce63194d2f4f4b850352b5fe50146dc0e4c4f22c90500c5bfe5cd7f37
font_01_sfnt_off0000ac57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC57 10392 bytes
SHA-256: d65f234e9576dc669663bbe661739c0ac44a71b8e9238d4594c407ebaef9d84a

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