Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66ef2322b183169…

MALICIOUS

PDF

49.7 KB Created: 2020-10-10 03:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 42ac30eace21711ef3d2ae5350877613 SHA-1: 54ffcb9637fcf35f537b7d1fee2c26347f74b702 SHA-256: b66ef2322b183169fd6ea5c9b2cad9b5542ea69c17e967db1492a3bd303b4b48
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=the+things+they+carried+excerpt+summary In PDF document text
    • http://files.luisruuska.com/uploads/1/3/2/3/132303329/rujajegugon.pdfIn PDF document text
    • http://files.drshomoknows.com/uploads/1/3/0/7/130776077/juwemiwipot-fuxiti-wituzananopezaz.pdfIn PDF document text
    • http://lusasan.djconsuelo.com/uploads/1/3/1/4/131437812/205299.pdfIn PDF document text
    • http://files.womenwithapurposemin.com/uploads/1/3/1/3/131383613/medabuvopo.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/disujo.pdfIn PDF document text
    • https://site-1037215.mozfiles.com/files/1037215/sojojefinasisojibex.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/17f90fa8-417b-456e-a6e2-3603ab547336/33574751144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f38fd5f-d387-4c5b-80a7-f204c436efa0/bemarepaboke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18250da4-95dd-4f09-9601-7764f91da94b/96323235890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c35427e-5d80-430d-af8e-dd8a0f5134ed/20043068370.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1493546-8a19-46a4-b050-c899b65bc071/40292825487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2630/3134/files/nise_control_systems_engineering_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/wgt_golf_free_credits_cheat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/jesosoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/transmission_of_heat_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2175/7337/files/lista_vencida_cinema_dinamita_cover.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000859a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859A 5572 bytes
SHA-256: 9ca736a0144b4b445ccb1dacfcd9df6603f24a04fa597124f8efed70922b7f99
font_01_sfnt_off00009878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9878 9652 bytes
SHA-256: efd928630d8ab3a57b263a66e3ab1fe847c3f755c013f6cc2c742540008961f0

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