Malicious PDF — malware analysis report

Static analysis result for SHA-256 449e64f81ebfe806…

MALICIOUS

PDF

40.6 KB Created: 2020-10-09 12:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01c91bf780b8044634ae5319e3d628b5 SHA-1: 8ce589659fb3813b6ea7c517a3d72278aae9c78e SHA-256: 449e64f81ebfe806c74c70a4b06d0059eaee703ee48c269479cd655bf0bf8fdf
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/pify?keyword=formato+de+guion+tecnico+para+radio In PDF document text
    • http://kebibet.fusioncbdshop.com/uploads/1/3/1/3/131380600/89b16e8ee1d972.pdfIn PDF document text
    • http://zesifo.mathlandinc.com/uploads/1/3/0/7/130775050/9851060.pdfIn PDF document text
    • http://files.longheathchurch.org/uploads/1/3/0/7/130739747/9809153.pdfIn PDF document text
    • http://files.alohabaibala.com/uploads/1/3/1/1/131164473/8af0ad.pdfIn PDF document text
    • http://files.letsrockandrollandchangetheworld.org/uploads/1/3/1/3/131397973/16f02be.pdfIn PDF document text
    • http://files.reneegraff.com/uploads/1/3/0/8/130813715/0cef5999b.pdfIn PDF document text
    • http://wedojap.thewordwasmadeflesh.org/uploads/1/3/0/7/130739456/a59fb56ae39.pdfIn PDF document text
    • http://files.risingstarschicago.com/uploads/1/3/0/7/130775257/1816588.pdfIn PDF document text
    • http://mijonefax.jmkaukola.com/uploads/1/3/2/7/132740405/1fa9aaf534c6.pdfIn PDF document text
    • http://files.letphilosophyshine.com/uploads/1/3/0/9/130969693/9921787.pdfIn PDF document text
    • http://wulebu.belindadurrant.co.uk/uploads/1/3/2/6/132683001/1458476.pdfIn PDF document text
    • http://dodogotaz.hundredspremium.com/uploads/1/3/0/7/130776728/tugadowejijijuvirep.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/821a7971-fe2b-4e1a-ad99-63117469e2dd/sizulimapume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/574a75e4-e95a-4c0e-9bfb-13afecc7ab8e/40938718795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5f16c7-8626-40f8-8d91-1f1b97959542/69096922334.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_off00005ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC0 5136 bytes
SHA-256: caf77a636bdf492ca69b361c3dcd1061a5c92defeb2501b2503334cc96b3f559
font_01_sfnt_off0000702a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702A 10808 bytes
SHA-256: 3f6cebed84eb31bff63a49c74cd208ab2cb4f84d04763d5620142ab367fddb68