Malicious PDF — malware analysis report

Static analysis result for SHA-256 84890e6a56e9b8b2…

MALICIOUS

PDF

55.8 KB Created: 2020-10-05 13:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1170faea11f47b1afd113257c84b0f80 SHA-1: f4cc67c1fc0b7aedd6f185d0b30ff0d7cae2b74f SHA-256: 84890e6a56e9b8b2517a7055d5ea5c46e2afc4c0206b35d1539f14ed92067bf1
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://cctraff.ru/strik?keyword=bruno+stair+lift+manual+pdf In PDF document text
    • https://site-1040795.mozfiles.com/files/1040795/22603954413.pdfIn PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/45214893711.pdfIn PDF document text
    • https://site-1039472.mozfiles.com/files/1039472/66809099180.pdfIn PDF document text
    • https://site-1038790.mozfiles.com/files/1038790/64811355422.pdfIn PDF document text
    • https://site-1036900.mozfiles.com/files/1036900/subaramamulazujokenesa.pdfIn PDF document text
    • http://pazufaxu.caelancreaser.com/uploads/1/3/1/4/131453588/juxadujoja.pdfIn PDF document text
    • http://files.lindsaymaephoto.com/uploads/1/3/0/7/130740432/3172544.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/3c8b3dde-3dc4-423d-b79e-7bae68cb6abc/68060052025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f5c5b94-ef98-4d3f-8119-10b06fc530b2/sovigawikerajibalizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acd14bf2-25bd-461d-a5da-aa18d112df2c/11194351678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9970/8821/files/coleman_tent_trailer_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2802/8312/files/dirt_devil_filters_f2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6099/2927/files/bimosus.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 5236 bytes
SHA-256: 816f7ca12ee7fd6cb1026f58925316e4500b44ea5724376709e0e86c1006ce88
font_01_sfnt_off00008803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8803 2268 bytes
SHA-256: 7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
font_02_sfnt_off00009213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9213 13288 bytes
SHA-256: c081647f750f9cc57c1969290ea11f05c6be39882f7e37c5b5cbbba8d195d3c1
font_03_sfnt_off0000bca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA5 16208 bytes
SHA-256: 560e11d5da3ed60647d844d0127c34f4fbbc0b68999cbe35161ddcd790341c9f

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