Malicious PDF — malware analysis report

Static analysis result for SHA-256 619f001cc8fe4500…

MALICIOUS

PDF

35.9 KB Created: 2020-10-13 04:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 50ece708922c891631c84af2466256ef SHA-1: 782825ce0349c322f3a87f220bd0329cbd0c2f30 SHA-256: 619f001cc8fe45005119d78c72800c00414289182acb60880f7451202a4ae224
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://ggtraff.ru/strik?keyword=honda+pcx+150+owners+manual+2020 In PDF document text
    • https://site-1043541.mozfiles.com/files/1043541/zebuvavevomasazadumasibib.pdfIn PDF document text
    • https://site-1042510.mozfiles.com/files/1042510/xufokijanafobokudeti.pdfIn PDF document text
    • https://site-1036678.mozfiles.com/files/1036678/janobawik.pdfIn PDF document text
    • https://site-1041388.mozfiles.com/files/1041388/64849760324.pdfIn PDF document text
    • https://site-1040602.mozfiles.com/files/1040602/23470936303.pdfIn PDF document text
    • http://files.athomeinthewoods.org/uploads/1/3/1/3/131383664/178c9b3d60d2.pdfIn PDF document text
    • http://files.donovankleintv.com/uploads/1/3/1/4/131453054/9893319.pdfIn PDF document text
    • http://files.cmbuilders.org/uploads/1/3/0/7/130739387/zutamineleliseva.pdfIn PDF document text
    • http://babesudu.kanecountystormwaterupdate.org/uploads/1/3/1/4/131437069/pakivedojarolaf.pdfIn PDF document text
    • http://files.skylarkpubl.com/uploads/1/3/1/8/131871907/lewofikiwi_pefivoro_pawifebimijomet.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/a20bebeb-e189-4d05-bfa2-c4cc0d53c39a/duvovuranotafuwone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27ba05df-57bf-4c67-a340-bf00bd47f947/34230448127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce587a63-93b7-4bef-a5a0-a74fbf7da41b/gusadejomuwateno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2fa155b-ed27-4cd3-997c-82eb217ebf85/83371251577.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d2d7be-e929-490b-b591-16e16b237c9d/23593178404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50d5872-e277-4c0f-bfd0-bf28d4d3e6aa/bakov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/567c0fd5-de5b-45de-b3fc-ff7089ff966b/zovalafisunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e011001-c5bc-46e3-b65d-8f29ecc32dd2/nifatikelukufubibubevenup.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_off00004c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C0C 5792 bytes
SHA-256: fddd8c31c8fa31f216f22e213534a735cd5afd86a73dc3b8fe2f06a0b02fc05d
font_01_sfnt_off00005fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 10232 bytes
SHA-256: 8b17d6f1b64b4e29125daf088bf0876a75b7212dccea290f1a65718ea61fe44d

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