Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea2499e83f6d98a…

MALICIOUS

PDF

44.7 KB Created: 2020-10-07 02:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f7c3354df9e263b0ca40e600b1f1b9dd SHA-1: a43e9a6ca5a39e764d7e884aed0d9b6efb801072 SHA-256: eea2499e83f6d98a16c52832f9c4d5bf718402a42c14cf2fc02668189342c911
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=streamlabs+custom+css+chat In PDF document text
    • https://site-1036786.mozfiles.com/files/1036786/9231715084.pdfIn PDF document text
    • https://site-1040785.mozfiles.com/files/1040785/juxavipubafepofapim.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/sopeg.pdfIn PDF document text
    • http://files.annamerika.com/uploads/1/3/1/4/131453950/a602ac33bb5.pdfIn PDF document text
    • http://rawudisux.augustushoffman.com/uploads/1/3/0/8/130814328/kapufu.pdfIn PDF document text
    • https://site-1036731.mozfiles.com/files/1036731/26997765408.pdfIn PDF document text
    • https://site-1037203.mozfiles.com/files/1037203/najejuwosokunis.pdfIn PDF document text
    • https://site-1042780.mozfiles.com/files/1042780/13866826255.pdfIn PDF document text
    • https://site-1036652.mozfiles.com/files/1036652/85526369654.pdfIn PDF document text
    • https://site-1039506.mozfiles.com/files/1039506/66903252123.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4054/1342/files/philippine_consulate_outreach_2020_las_vegas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/32716567148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7523/4720/files/54532601433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4094/3511/files/coerver_coaching_drills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0073/6161/files/pamimeluripugejavik.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_off00005d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5D 5284 bytes
SHA-256: 28f872c2e60b4549be38546767b22295752f7bf00492466564670296dd92594a
font_01_sfnt_off00006f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F18 4764 bytes
SHA-256: db6fb8f29cd0a648ec8d096d4e3bffd616e518a722d5bb2a4f3ab413bebb0bb6
font_02_sfnt_off000080b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B9 10800 bytes
SHA-256: c3f587f7a23c5aef8185bc177155926c854bd432645a284bfc4b7a34aaa1f18c