Malicious PDF — malware analysis report

Static analysis result for SHA-256 4072052cc82ca397…

MALICIOUS

PDF

44.8 KB Created: 2020-10-11 10:22:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cfdaa924e0c2270da53afcc5c9b39c0a SHA-1: 78d207d326672090297dc269aa4144e0424cc747 SHA-256: 4072052cc82ca39789a9c3f35727469b1068bb0572852b882fcbcdcbe5a1cdd3
184 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.
  • 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.
  • 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://cctraff.ru/strik?keyword=fallout+4+ridiculous+load+times In PDF document text
    • https://site-1038967.mozfiles.com/files/1038967/21349589022.pdfIn PDF document text
    • https://site-1039398.mozfiles.com/files/1039398/botekotelavapul.pdfIn PDF document text
    • https://site-1040293.mozfiles.com/files/1040293/wutijojibunivitola.pdfIn PDF document text
    • https://site-1039745.mozfiles.com/files/1039745/vodugunesedisebikatufim.pdfIn PDF document text
    • https://site-1039583.mozfiles.com/files/1039583/xeruxanepemijadomodote.pdfIn PDF document text
    • http://files.koivujatahtipaivat.com/uploads/1/3/1/8/131871614/xalulebufit_wukaxawe_tabugamabojor.pdfIn PDF document text
    • http://nuboke.crescenthillcottage.com/uploads/1/3/2/8/132814930/7019687.pdfIn PDF document text
    • http://rodaven.joshuaegallagher.com/uploads/1/3/1/3/131379615/bubabafu_tetanasuzejalo.pdfIn PDF document text
    • http://wojogof.lonestarfloor.com/uploads/1/3/0/8/130814687/sowilojijelapo-wawoxe.pdfIn PDF document text
    • http://files.authenticseeds.org/uploads/1/3/1/6/131636576/7e334422f85.pdfIn PDF document text
    • http://letuwa.callihanenglish.com/uploads/1/3/1/6/131637352/giriguladewedat_monemamuruja_zilojenomijas_vixolireve.pdfIn PDF document text
    • http://files.kerrionmission.com/uploads/1/3/2/6/132681452/wepodamus.pdfIn PDF document text
    • http://files.mtzionholychurchde.org/uploads/1/3/2/6/132683267/1553446.pdfIn PDF document text
    • http://pusuxupo.mkgcleveland.com/uploads/1/3/1/4/131437657/gotuzugeg_golitebuxafa_gemapebut.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/9dc98c3f-753f-4bf4-abdd-c4b6397baaac/mekuxopusuzejozivuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/152c9adb-fe8e-4d7b-bc6c-3387283318b0/zenuzuxananalomawuno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c29eef4-5ee7-4be7-ae43-901a771a056d/82377040538.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_off00007228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7228 5128 bytes
SHA-256: 95cbedd2077a1c4176cfd482149d7b67a37103c3c11541d390a6744162d0f84d
font_01_sfnt_off00008386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8386 10272 bytes
SHA-256: 0df0c6b0a9b25284bec86ce7bdc4fe1468b65d22a3e76907af76b6efdde51a76

Open this report in the interactive analyzer, or submit your own file for analysis.