Malicious PDF — malware analysis report

Static analysis result for SHA-256 0db5dbb056e92d19…

MALICIOUS

PDF

58.5 KB Created: 2020-10-10 14:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2d6bb16836e26ee59bf2abad3767a49d SHA-1: 9a7217f742d3f6b5406d620498b1e7045c09a022 SHA-256: 0db5dbb056e92d19a36962626200df63ebdc669610ab1c17b1b9517fb1ae14cf
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://gettraff.ru/strik?keyword=que+es+la+igualdad+juridica In PDF document text
    • https://site-1037875.mozfiles.com/files/1037875/zodipejugipixigamoxe.pdfIn PDF document text
    • https://site-1039212.mozfiles.com/files/1039212/kabozorodibegaxek.pdfIn PDF document text
    • https://site-1039188.mozfiles.com/files/1039188/84139273665.pdfIn PDF document text
    • http://files.yoder-bros.com/uploads/1/3/0/9/130969489/dotele.pdfIn PDF document text
    • http://files.q8ti.net/uploads/1/3/2/3/132303374/guwazirakesidapuwaf.pdfIn PDF document text
    • http://files.primefitnessmd.com/uploads/1/3/1/4/131438175/9441257.pdfIn PDF document text
    • http://files.larrondolab.com/uploads/1/3/2/3/132303245/gewakavekerune.pdfIn PDF document text
    • http://files.leswilkesphotographer.com/uploads/1/3/2/6/132695323/saxifu.pdfIn PDF document text
    • http://files.michelletrappen.com/uploads/1/3/0/9/130969705/fimuremeferojo-negor-safefenezunak.pdfIn PDF document text
    • http://dupovo.spikemclarrity.com/uploads/1/3/0/7/130738948/muxujerimimenoga.pdfIn PDF document text
    • http://nafizeb.frhsmusical.com/uploads/1/3/1/3/131381241/8ca4bb9ef1c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/13f0d950-0a7d-4eaa-8975-054557e62348/98709160460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95e28efe-2f05-4111-ad60-1da8ade0e88b/rugerusutilawutisawedowem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae9636ce-2a8d-4f68-b83f-0afd8d84559c/89155617188.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b87dd5fb-7e93-4e92-a520-090035beed5c/93993726369.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea09df5b-d1a6-4a50-abd3-894e441fa1b6/28201841192.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8D 4832 bytes
SHA-256: d9d47fccbe31fa99dc973606bbf6e153e4c17e4385e2a07c37690627461f0fd8
font_01_sfnt_off0000ab07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB07 11056 bytes
SHA-256: 7ee077455d6651b46c9b952ea216c7f38dfb7a10009ba12d1dfd07e94c033394
font_02_sfnt_off0000cef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3