Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4e44413867d27f…

MALICIOUS

PDF

53.3 KB Created: 2020-10-16 22:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0f7f9501dbc003c58a0b0ac040afd8c3 SHA-1: 80fe102d7ca0694fbee75050ef0f4cf595dd7e9f SHA-256: 0e4e44413867d27f3c61f0bb7ec605fa1e2b05d6cfbe3770531b4971597cbaee
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=last+book+in+the+universe In PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/vivutakot-bixevud-rodejalumovev-difizivotogokub.pdfIn PDF document text
    • https://pudukodup.weebly.com/uploads/1/3/1/4/131407572/biratamisovogi.pdfIn PDF document text
    • https://popilezofale.weebly.com/uploads/1/3/1/1/131164236/4309923.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/pebuxoz.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/abee60c4ffd.pdfIn PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/tigosorivibisakoxu.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/6b127726-0d8f-4df9-830a-bb73ffd0db5b/tavukupunozon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc3ac52-ab2e-4236-8a6b-4479b32a82c4/ratawigemisow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95875509-f73f-4754-89fa-8ed2a18bd1a1/pakaxipuvisoxojigelagixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/bavemodiloleribuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7612/7394/files/figure_drawing_michael_hampton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a12cbab-7cd5-473c-864c-37707e96edf2/lefugaxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa2b83f-b136-45dd-a41e-bada33586a6d/64061486599.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b988f8c-6d16-499d-850c-aa9cdc6f2833/57017511752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed906d3d-737b-4ef3-97b3-a71f17c07fdc/perisovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9271/4685/files/shadow_beast_owl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0567/6192/files/social_issue_projects.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_off000095f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95F0 4944 bytes
SHA-256: c76dfbbd8e042ad92b0c0100718ed6703a3523dfa8a52535e4ff0252568ce788
font_01_sfnt_off0000a6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6BB 9812 bytes
SHA-256: 492555b1a37348aca1126eb954bdcb7fa75d46632ff61ec24494833d628c72ae

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