Malicious PDF — malware analysis report

Static analysis result for SHA-256 feac16e312dcb934…

MALICIOUS

PDF

67.0 KB Created: 2022-07-12 23:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.4) First seen: 2024-01-08
MD5: 44bb5460dc1ab72f548ed7e34857d515 SHA-1: 843f3753836bd67e5a51017e9161ac3a1ec00a09 SHA-256: feac16e312dcb934c2dec312a918f707f394fbecc6ad13c99435800ea774fe75
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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 http://ydeepty.com/wb3?utm_term=formation%20of%20adverbs%20from%20adjectives%20pdf%20worksheets%20pdf PDF link annotation
    • https://zutuzasibeduvux.weebly.com/uploads/1/4/1/2/141294743/rowugixozelenuveke.pdfIn PDF document text
    • https://psystat.net/candyticket/uploads/page_images/files/92854375133.pdfIn PDF document text
    • https://pepibugogik.weebly.com/uploads/1/3/1/0/131069762/divuwerowo.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/28058c.pdfIn PDF document text
    • https://pipoweje.weebly.com/uploads/1/3/1/4/131438571/duxatosoxono.pdfIn PDF document text
    • https://nupurotuxi.weebly.com/uploads/1/3/4/8/134854616/6377338.pdfIn PDF document text
    • https://wulijubinewi.weebly.com/uploads/1/3/3/9/133997189/xumupuvigolubi_nuzurinigufi_moregosi.pdfIn PDF document text
    • https://vuxisiso.weebly.com/uploads/1/3/5/3/135321279/d673f.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20220224_72CC1DB7A17C9F60.pdfIn PDF document text
    • http://xn----7sbbbizu2bxaod.xn--p1ai/userfiles/file/mobokixeloferizelujibusu.pdfIn PDF document text
    • http://genarchi.com/data/temp/file/fuzapirapuxugufefi.pdfIn PDF document text
    • https://sixebujexe.weebly.com/uploads/1/3/0/7/130740217/serusilufakeso.pdfIn PDF document text
    • https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/xegeribubudijuju.pdfIn PDF document text
    • https://mapro-spb.ru/img/file/rakuf.pdfIn PDF document text
    • https://jfd.news/app/webroot/uploads/files/vemorawunadememeniv.pdfIn PDF document text
    • https://www.webursitet.ru/kcfinder/upload/files/97554202261.pdfIn PDF document text
    • https://sirebaduwerosi.weebly.com/uploads/1/4/1/5/141594560/1261654.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16285a14e6dce2---81430873107.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/wisilorawatitutulam.pdfIn PDF document text
    • http://olgapolyakova.de/files/files/xavaxusivoni.pdfIn PDF document text
    • http://www.bitstream.comIn extracted file (font_01_sfnt_off0000b707.bin)
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000a4f0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000a4f0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4F0 8940 bytes
SHA-256: 897a1d9f6f4b474150d2504b8fa79d1507a5ac285a7fb2bf61803f06dc51c46c
font_01_sfnt_off0000b707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB707 10416 bytes
SHA-256: e5e2bddcde03e187496347d28b3802173fbd20c843ee3204db237b830166d891
font_02_sfnt_off0000d05d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05D 16732 bytes
SHA-256: 658185e5e568b1ff0683942646b8f8be9834d5eb5b14cf5873e731db85b4a28a