Malicious PDF — malware analysis report

Static analysis result for SHA-256 278e0911b64d4930…

MALICIOUS

PDF

72.8 KB Created: 2021-03-09 00:07:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 674bb096b6eaf2b6f57a7c4ac54b89a3 SHA-1: 989d10121b9ec8bd1177a4f784867df54ec8b4a3 SHA-256: 278e0911b64d4930c89628dfe9879bfc529f81f4aae5db54a69132fb184129a1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/award?keyword=limitations+of+social+media+marketing+pdf PDF link annotation
    • http://mebovaduzi.mywebcommunity.org/xunitafopev.pdfIn PDF document text
    • https://nexirexosevexos.weebly.com/uploads/1/3/4/5/134500935/5152545.pdfIn PDF document text
    • https://zesaxigupube.weebly.com/uploads/1/3/4/0/134016892/xusevidebu_galanamubeluba.pdfIn PDF document text
    • http://neridofufuleteg.scienceontheweb.net/organizational_behavior_meaning_in_hindi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503524/normal_60317803f0993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489429/normal_602ca3e6a459f.pdfIn PDF document text
    • https://xajupodesuze.weebly.com/uploads/1/3/1/3/131380723/bemukudi_tasawu_lubir.pdfIn PDF document text
    • https://mejotozoferu.weebly.com/uploads/1/3/4/8/134866749/903346a8fcd.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/REhgLA3/kefokojoxoge.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/9640844.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366407/normal_60060c3d7f9d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449627/normal_603dc6cf7b7e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413361/normal_5fef8df6c9a17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5fd7951e823d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485946/normal_5ff78e8e5ce53.pdfIn PDF document text
    • http://xiwakaravivomik.scienceontheweb.net/carl_jung_collective_unconscious_example.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414173/normal_5fe260f314517.pdfIn PDF document text
    • http://fufejezonodim.mywebcommunity.org/the_book_thief_chapter_13_summary.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387814/normal_60433b872779b.pdfIn PDF document text
    • https://cdn.sqhk.co/lukumuzu/dMKgjii/85265005912.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/jhL3EmF/83622532506.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_359e32998edf400facaefe06f68ce065.pdf?index=trueIn PDF document text
    • https://ab60d57a-1f92-408f-9079-0b325776b613.filesusr.com/ugd/724fb5_e2f54d6fd796451097eed11a7e09923a.pdf?index=trueIn PDF document text
    • http://vilatelisoto.onlinewebshop.net/fender_gb_hot_rod_deluxe_112_enclosure.pdfIn PDF document text
    • https://aa4c2489-c93b-4667-afab-104bf5323bad.filesusr.com/ugd/8b49c6_f9f087e267344427a934978cd1e11fa3.pdf?index=trueIn 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_off0000e123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE123 5480 bytes
SHA-256: 05ba4326933b6f0e602f5d4632d699981109a2f283296f83038f8ab4ed54470c
font_01_sfnt_off0000f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B0 9892 bytes
SHA-256: f2d360775df8efd5b6d1134bb3dadd68186f49ee5dc22be0c45c6d19df69a958

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