Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc44d8e4faa8ccd6…

MALICIOUS

PDF

45.0 KB Created: 2020-11-08 16:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9451fad6396d725b8e979191ecd717ad SHA-1: f6c0342b7af43c9122ccbc84fa425d7ca3375780 SHA-256: fc44d8e4faa8ccd628ebac0e5a05a63098c5e4491f5ec0fb51d8d6fe4470122c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/123?keyword=myanmar+mp3+album+free+download PDF link annotation
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/a39f98c755.pdfIn PDF document text
    • https://lorovojiwu.weebly.com/uploads/1/3/4/3/134318747/5680216.pdfIn PDF document text
    • https://ralututoj.weebly.com/uploads/1/3/4/4/134457658/foxis-zovepibomorade.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/9886759.pdfIn PDF document text
    • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/dovifugusew_zagakuwiwe_lusenikikime.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/damerirazib/95011456710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/794c1588-748d-423d-ad7b-45e32ad7536c/steam_siege_setlist.pdfIn PDF document text
    • https://wezuvow.files.wordpress.com/2020/11/calendario_olandese_2020_da_stampare.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/85657396816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ebbdac5-5f8a-4e4e-8054-c74099a03c52/samalomejun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b55a406-700f-4398-8cbe-8df1ef059008/61990951201.pdfIn PDF document text
    • https://woxawekobati.files.wordpress.com/2020/11/bdo_imperial_horse_delivery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c3f68f-0c49-4d4b-b711-6bacf7f2f4c1/povibiganasifopeduronu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000581a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x581A 5512 bytes
SHA-256: e51a097209feb23992779e5b524893803390d767c7996e941cf0371f0f7a0802
font_01_sfnt_off00006ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE1 11184 bytes
SHA-256: cbc0eb39f1f6243b704b6227974d13537ed85303b44cdb6f164a38414a512398
font_02_sfnt_off0000913c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913C 16204 bytes
SHA-256: 7fd64535976a653b4736ad1585a75217cf0a564ac44b6981ec5f997e3b90ecea

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