Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ff93bb5af0bc3c1…

MALICIOUS

PDF

70.3 KB Created: 2021-03-09 21:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a07502b42db527b8832c7f88b64ea2be SHA-1: 175682b4984c6847c3beaeb00c176f2881039bdb SHA-256: 3ff93bb5af0bc3c19a9703ccca030fe864c8f82486ee5dc63d280826285961bc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://vilenefex.ru/wix?keyword=download+full+movies+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373527/normal_5fe754a443bb3.pdfIn PDF document text
    • http://orbitan.fun/venorowilokatimupk3.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/queen_of_shadows_audiobook_free_downloadx4brc.pdfIn PDF document text
    • https://jimurapixow.weebly.com/uploads/1/3/5/3/135399705/e4e0b4.pdfIn PDF document text
    • http://axecheat8.xyz/57680151123fcaa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_5fd662bb01826.pdfIn PDF document text
    • https://semotifivunadi.weebly.com/uploads/1/3/1/3/131380295/nonutevejopogesofixa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404490/normal_602bf8bad8fd8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443619/normal_5fd063d9f2039.pdfIn PDF document text
    • http://leadtop.co/lofodefoxatesawebyzkc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5fd9934ed56ac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f0ddeb88-3549-4a27-8821-6e3dd713f165.filesusr.com/ugd/2b74da_3486bea403264a21bfeed84c3a126c9e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab7bf36b-f3be-4750-97b8-b6cd12298620/wokutinof.pdfIn PDF document text
    • https://c93e3e17-565c-496b-95a0-45fea83b015f.filesusr.com/ugd/cd9bb8_4539afaa9fa9490a8338566b62c42265.pdf?index=trueIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_17f7324be4c64e1f91b5e3e463fef07e.pdf?index=trueIn PDF document text
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_7a7d65865dea4a0f95c257bc74c5d0f5.pdf?index=trueIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_4f7ebf21863f48618886a3ae4293b0b8.pdf?index=trueIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_d243cac4e8af4303b5394fe77717c2a0.pdf?index=trueIn PDF document text
    • https://0dd4521b-3e41-4083-9bcc-807cce03ae78.filesusr.com/ugd/cfe2e9_042d1d49e422421fa280314fe8741f8b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d22facc-1420-41ae-b957-d0c117daeffd/29749519584.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_off0000d6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DA 5384 bytes
SHA-256: 46407b05fcd267110809cda0e1edded651107872a514495b851ccfea74fac81b
font_01_sfnt_off0000e93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93E 10184 bytes
SHA-256: 7564f5cfa80f62a46caa32cc8a28a689bc5b0ed3c4f177fdeabba003c4ca4c45

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