Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f441f12b56e5201…

MALICIOUS

PDF

57.6 KB Created: 2020-10-17 17:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f907b33e5b0841d788c7e25a4977d135 SHA-1: edfd03053f507f61b0288540a333645e7c5cf8a2 SHA-256: 2f441f12b56e5201c54d032f405aae382d8b0611c33fa4dea4b71327a9874c9e
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://ggtraff.ru/strik?keyword=telecharger+bienvenue+chez+les+ch%2527ti In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f873fb41693f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8765b62d155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5f89588c5425d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f88ed5d84d93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366957/normal_5f87cf5e3e72a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f877ee02cec9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5f89beae17d0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f8aee6fc1b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_5f874e1160c6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f875656b60b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f890b6329d22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f87b819c91b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87049f77f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5f89830738728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f8745fbdd2b3.pdfIn PDF document text
    • https://fisotewefupug.weebly.com/uploads/1/3/1/0/131071176/3680112.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In 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/cdf485f8-38dd-4a15-81dd-f7e2deefd630/dotojefulitutigebemuxerek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fadd0397-3848-4113-8681-8702793d295a/71869190353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7884/4068/files/wemumixuxidoref.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1467/1514/files/vebujoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6976/7321/files/terrarium_apk_no_ads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1070/6619/files/kimemagaxarepejinavij.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CBA 6168 bytes
SHA-256: d841e6ee9fc5f8d88f1d94419f2a0f587508a927e8deb92e2b18ca34c352e48a
font_01_sfnt_off00009c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C59 5292 bytes
SHA-256: db962328f9c4688a2b13a45861913d50b62197f1b3fd8885aeec1b6a1f9bff5d
font_02_sfnt_off0000ae68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE68 12760 bytes
SHA-256: 4557fcc9b759fc43495b68258677432282311d93b3a8dd45c3deef5a499628a7