Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7191109a3571e7…

MALICIOUS

PDF

40.1 KB Created: 2020-10-16 07:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aec939e558ee9e943bb33e556b176826 SHA-1: 4d66a065b27d8565951a34b8b64645fe801a2256 SHA-256: ed7191109a3571e7434c5dd5cd48bbd71b0987c1be16b2c733efbf2c57015560
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/123?keyword=levine+physical+chemistry+book+pdf+download In PDF document text
    • https://site-1039355.mozfiles.com/files/1039355/40404829226.pdfIn PDF document text
    • https://site-1038981.mozfiles.com/files/1038981/98054321310.pdfIn PDF document text
    • https://site-1039173.mozfiles.com/files/1039173/5411200992.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/08477f7d.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7904132.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/c32f00a4.pdfIn PDF document text
    • https://site-1042770.mozfiles.com/files/1042770/vilevirozomoduduvuxis.pdfIn PDF document text
    • https://site-1040516.mozfiles.com/files/1040516/3822944736.pdfIn PDF document text
    • https://site-1043121.mozfiles.com/files/1043121/69223344450.pdfIn PDF document text
    • https://site-1041845.mozfiles.com/files/1041845/boon_edam_speedlane_manual.pdfIn PDF document text
    • https://site-1038756.mozfiles.com/files/1038756/7576402605.pdfIn PDF document text
    • https://site-1039275.mozfiles.com/files/1039275/89391333202.pdfIn PDF document text
    • https://site-1039624.mozfiles.com/files/1039624/wagebi.pdfIn PDF document text
    • https://site-1039525.mozfiles.com/files/1039525/pogurisanipilexuz.pdfIn PDF document text
    • https://site-1039538.mozfiles.com/files/1039538/jopafe.pdfIn PDF document text
    • https://site-1038353.mozfiles.com/files/1038353/mekosuzujuxi.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/cbd24d6a-98d0-4934-b53a-a18b89dcd806/nojaxavoguven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4022402-57de-4dcf-b713-53f474a3753f/78473267318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5865788b-b125-4615-87c1-1dc044c84fd9/88541327644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ad66acb-9aae-44e8-b8b9-de9289e344e0/sujolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d75dba8-db3a-450f-b761-9a867eb75e21/54423636821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/886db6e9-7e85-428c-9278-cc8ce6e23cfc/61419926835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffea0891-abd2-4cd1-8164-78331751fe8b/moxediko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6477839-e99c-4f64-a97a-7ee7b945261c/nuxasujatorokapoxap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b2e660a-9d57-4325-ad3b-e81cf18269a4/88349334316.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_off00005c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C03 5792 bytes
SHA-256: 18e9e82ddb63c3edde177d631cd4bdab23099754fc32d97634ed38df2fb842f4
font_01_sfnt_off00006f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9D 10120 bytes
SHA-256: b7bee4ac92b1933c15183a06e3d786f25748eeb1a04cbe1ca9f7bd16bf07ad39