Malicious PDF — malware analysis report

Static analysis result for SHA-256 962a22ccecb41331…

MALICIOUS

PDF

47.0 KB Created: 2020-10-03 12:08:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 69086454984408fa1e891bb9e9c477e9 SHA-1: 6d3e9024e23ed94057743606e1ded24660036df2 SHA-256: 962a22ccecb4133191df03b16626268a73b750379473d20e6bf4bc8839bdf1ff
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://ggtraff.ru/strik?keyword=infection+prevention+control+pdf In PDF document text
    • http://files.idcseychelles.com/uploads/1/3/0/7/130775698/mivom.pdfIn PDF document text
    • http://bobuxatag.udexlly.com/uploads/1/3/2/8/132816066/denometajewi.pdfIn PDF document text
    • http://xuxudame.riverwalkadultdayservices.com/uploads/1/3/2/8/132814989/d1fff.pdfIn PDF document text
    • http://zojexos.thecheesewizard.com/uploads/1/3/1/1/131164250/padesojofakujujowuvi.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/rejow.pdfIn PDF document text
    • https://site-1037922.mozfiles.com/files/1037922/kideti.pdfIn PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/33314897991.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/d82d04b0-6293-4487-bd57-638fce0cf851/78869171050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99af7138-f92d-4dae-8c80-d685b010ed3e/56384554686.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4b0e6a-8998-400a-8ad8-caead008955c/kixoredipozol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b226ae-f69e-4a12-a71f-1242cbb91089/5406495058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83bdc63b-e3e0-47a6-a0bb-1ad60bdb10c1/30501858572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f421a97-d651-4541-a9ed-23b06b94ddb6/rigovujobepoju.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA0 4756 bytes
SHA-256: 41c45d313b584932fff6b815b078b81c3f6920ef7465c3b54620ae97c16b6d6a
font_01_sfnt_off00008bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEA 10272 bytes
SHA-256: 2d5f1724ed8c6674a72655a03837eac33d3687ec75cbbca9d23469ce3423550e

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