Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e25f8fe3faa190…

MALICIOUS

PDF

57.9 KB Created: 2020-11-11 00:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9b329249941183fbed8d8f0b0d7cf5f4 SHA-1: 0c0766a34d1a9ecb1caba96019bd61167216dc8b SHA-256: e7e25f8fe3faa1906f805d5b9b3cb70770055262ef3e4710d7d74f350c8e50ac
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • 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://traffset.ru/123?keyword=filmes+online+gratis+completo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403274/normal_5faaf08d9c3db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_5f94ca0245322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377925/normal_5f8d711a477fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_5f8a74d48eb34.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/3253b7839a2.pdfIn 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/af93038a-a9f5-4b53-9433-e301e99ba9b1/angel_a1_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/394d6eae-9d38-4bc5-8644-d855f0aa6963/31787141708.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/88423593451.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/85996132042.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/mojiwamusebodilajobatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34b364cf-0940-4a4c-a9f2-107e81f6acbc/uso_del_punto_y_coma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8aa30f4e-5c82-49e4-aa85-3994696ec1be/47626120303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9b26a8e-3a04-4e76-8d9d-8f00dcf29e5d/53367233018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709b63b9-eaef-44fa-8ea0-5a7b56a10d50/konufajejiduxikoropulizi.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_off0000ac40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC40 5208 bytes
SHA-256: c2ac1e745bd4d78706ce35c2ae7ffa938aaaf61c9a980a0331977bdaa2024d75
font_01_sfnt_off0000bde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE1 8516 bytes
SHA-256: e2db64a51b87d1f7cbe4afc32f0522c8f011fa9094123a170e3c44be98411f87