Malicious PDF — malware analysis report

Static analysis result for SHA-256 2243e66ff9b62dc8…

MALICIOUS

PDF

41.1 KB Created: 2020-10-02 22:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fd05dd582c6a0638950e5b56a774ae98 SHA-1: f114429fd9b003d5890b517e1bf6ee3922a7e864 SHA-256: 2243e66ff9b62dc85066855bcd530fb645897b567706790e6b78045175a47093
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=download+late+registration+zip In PDF document text
    • https://site-1040602.mozfiles.com/files/1040602/siwul.pdfIn PDF document text
    • https://site-1036864.mozfiles.com/files/1036864/78386330514.pdfIn PDF document text
    • https://site-1036834.mozfiles.com/files/1036834/54833155523.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/74902125047.pdfIn PDF document text
    • http://wesukupux.myneosystems.com/uploads/1/3/1/4/131482826/1553281.pdfIn PDF document text
    • http://fuxuveve.sheslayybyrenee.com/uploads/1/3/2/6/132681951/7606626.pdfIn PDF document text
    • http://files.accountinglyceum.com/uploads/1/3/0/8/130813645/bujurotolaf-genopa.pdfIn PDF document text
    • https://site-1037922.mozfiles.com/files/1037922/27124760024.pdfIn PDF document text
    • https://site-1036744.mozfiles.com/files/1036744/xeretiteraberufoneje.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/55928532037.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/89545179157.pdfIn PDF document text
    • https://site-1038402.mozfiles.com/files/1038402/mutukuwub.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/54a24a5f-4764-4ec2-acde-2841cfc0d283/lopawududorowoxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dc2b3e4-58dd-494e-9812-7a1a323ec0b2/daligidekerixotomolit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2968a9dc-60fb-457f-aa39-df2c7d5d4695/rukedugij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ede1b04-8fe7-46d7-b9da-fa7e7ecc453a/dajise.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634C 5268 bytes
SHA-256: 7529e35e7df274b98a0ee2f67bbd3d029aacf301a1cd50ac2743a5bbe9cc8926
font_01_sfnt_off00007567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7567 9888 bytes
SHA-256: 4f92311488e509ddf152ac5b44e53a29d536d531b4e28fc5948d32729791662d

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