Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a19ee6cf6ccb27b…

MALICIOUS

PDF

59.8 KB Created: 2020-10-29 06:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: e749212317e347c5ca3f887f0cf5a1e9 SHA-1: 84cff762c3d15266c72642b912f0ce9ef2403c2b SHA-256: 5a19ee6cf6ccb27ba5abd47bb32e26e9f45be0bb4ee2ee02dc49d323ca0670fc
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://ttraff.me/123?keyword=fallout+3+fwe+load+order In PDF document text
    • https://fibigator.weebly.com/uploads/1/3/4/3/134313363/kewugedoter-sumowunezuvaze.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/348371.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5f90ff9a22c45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_5f960ca04ce6a.pdfIn PDF document text
    • https://mupawume.weebly.com/uploads/1/3/4/3/134365579/2236549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f917b3bdc2d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376375/normal_5f8aed8faee16.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009b0c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009b0c.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000d1e9.bin)
    • https://uploads.strikinglycdn.com/files/2a386863-107c-4508-95a6-f216c68a6183/tuneporuzugutup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5af0885-aa60-4821-9f6c-c26458075e32/honda_pilot_seat_covers_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2040a025-3aae-4970-9211-7cda7edbfbc9/86191739875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0672/3749/files/cell_organelles_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c836ac41-bc4a-469c-bcfe-2edafeecd266/3024305434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78044409-dbdb-4863-a226-920d4a4ae9b4/gotakoxedavixawewijip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee3546b0-66fb-4a48-a6a5-1fd181bda485/lobajudezikufigoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85ec543-5836-4d0d-b455-d4b1d8b5f65c/47316737543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98288501-deea-432a-bedc-548ef0ce0580/wetifulug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27f78f7e-fc99-4757-9fd7-02d96bb93a6f/1242034776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5065/8723/files/kofavumowa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25dba481-d0c4-4155-ae4f-c92038900084/pepunidetuvoxuveginut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d866c83a-0ff3-4f0f-a795-6f658c305563/senevarexekijot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d938c7c-79f7-41d2-9c26-1add7c35443d/lofewivelijakaxejuxabazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1682/1157/files/razor_scooter_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c588213-64ad-4cb9-b78c-0d08b21c485a/zubunudegujunokav.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 extracted file (font_00_sfnt_off00009b0c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B0C 4664 bytes
SHA-256: 1078117475e2d399ebe9f4d417679157da3c86bd11b95ea153d399417fd8f6ca
font_01_sfnt_off0000ab09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB09 12000 bytes
SHA-256: 12b8965b258807cda8125a752500b25427722d9abdfbcdb5e6bef57dea860ca8
font_02_sfnt_off0000d1e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176