Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ea7c1fb9546210…

MALICIOUS

PDF

45.2 KB Created: 2020-10-25 07:11:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 19f8eac24289ac87eb3a0a034027e3d2 SHA-1: e962eac1788b105dd3c14fc9243a8f67619275ef SHA-256: 22ea7c1fb9546210c2e37c8f861729ac0c2541cf19356557ab8f0b8ba76ac2b3
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.cc/pify?keyword=1jz+soarer+manual+conversion In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5f8a93a70b020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f93cc61bcfbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8703b82abe3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f8e320b7f4ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5f879c5f454e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f879fd1724b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5f89119430735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385417/normal_5f90d92d5d3a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/1e8c8290-3be6-4831-963d-0352af54a9d7/80905288218.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87aef404-434d-440d-98ad-6c5aa5aea917/68446945372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3260453d-75a6-4d38-8cc6-66efee250792/48308246211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8db22f1c-7c9a-4c45-be37-4d2e9fa1bf71/adoradores_en_espiritu_y_en_verdad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0693/4688/files/14393655674.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/1641638965.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/causas_de_caida_de_cabello_en_mujeres_jovenes.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/an_introduction_to_multivariate_statistical_analysis_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4faef74c-5d26-42ac-9a38-6cbd999f010e/67460517195.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bd09130-a2a5-4041-b566-b848f143730c/mopepovuzunowunubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98c25557-6eeb-46e8-87c2-38b5da1e7b05/xalaranorupulalulanula.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 4888 bytes
SHA-256: ad8d36effe3db62fa5f35c534c36b8150e9f644d086f78409439c7fab72b1791
font_01_sfnt_off00007569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7569 10688 bytes
SHA-256: 503fb9e9b6c8db38402866610687501a86d52bf91da4075fb1757ffe2b359b44
font_02_sfnt_off000099cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99CB 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2