Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0be3d2d3a36fe15…

MALICIOUS

PDF

44.2 KB Created: 2020-10-15 04:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ff65e5699141556bf93a34db5c36f222 SHA-1: 0f503add5c141ba26dcf6bcf7d8d00979dfa52f7 SHA-256: f0be3d2d3a36fe153680d29cc9409ad0ff61c448c3a9307caed6d86953e0e0c9
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/123?keyword=veritas+system+recovery+18+admin+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f86fd00a1679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f878c2f2afa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_5f8784f11c554.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f86f444355d1.pdfIn PDF document text
    • https://site-1039188.mozfiles.com/files/1039188/89760520731.pdfIn PDF document text
    • https://site-1042590.mozfiles.com/files/1042590/jigibidovowujozofupavovox.pdfIn PDF document text
    • https://site-1044503.mozfiles.com/files/1044503/kubakiwidasekukuzunuwoso.pdfIn PDF document text
    • https://site-1039270.mozfiles.com/files/1039270/delanupevobok.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/pebuxoz.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/70f77a9bf0ac1db.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/afbd779ea0a.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/3e75a4e696b2f2d.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://site-1039472.mozfiles.com/files/1039472/mipuveba.pdfIn PDF document text
    • https://site-1036632.mozfiles.com/files/1036632/83595030409.pdfIn PDF document text
    • https://site-1043925.mozfiles.com/files/1043925/22437020996.pdfIn PDF document text
    • https://site-1038653.mozfiles.com/files/1038653/senudujasasenomareteveti.pdfIn PDF document text
    • https://site-1042767.mozfiles.com/files/1042767/xefamoj.pdfIn PDF document text
    • https://site-1041684.mozfiles.com/files/1041684/vonedatogeviba.pdfIn PDF document text
    • https://site-1048445.mozfiles.com/files/1048445/wugiladawoso.pdfIn PDF document text
    • https://site-1041208.mozfiles.com/files/1041208/fujuk.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/a0384c14-c1e7-4940-94e8-bf37bb2c47a3/ramusara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f21a2060-238d-4332-a955-a71045fc67ee/nobuxisolipewod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6fd53f9-ed5c-4f54-bb17-657a6eefef12/56501692816.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_off00006e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E65 5600 bytes
SHA-256: c46bf066a023598432ea3d6889e8523de0cd831bc5eac52ecf7ec0bae4126e93
font_01_sfnt_off00008164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8164 9888 bytes
SHA-256: 4fbbf84098e6b5dea7ee79c4d309f53dd3bf1b523690f61828dd29e20ac590a7