Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc39cca32200dc2…

MALICIOUS

PDF

56.9 KB Created: 2020-10-19 00:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b31364f162b9003527a1926df8207376 SHA-1: 259e5059a2dfb435bada172e200c41a8544884b9 SHA-256: 2cc39cca32200dc2affb4d1def225b378b171ebea9b87a2056e8ac96bee6ed6c
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=android+dialog+box+tutorial In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366628/normal_5f876e23abf18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f8b9e0ce1e64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_5f8721bd434bb.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/297c0.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/7735552.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/pakamukow.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/5832647.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/ripesonegad_jinufavogo_gabimupiz.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/kisesajotikevezi.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/lamexuzilefed.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/2828d0b3-a36f-4106-b9cb-6d14920fb12d/6749465623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8192/7323/files/what_channel_is_abc_on_xfinity_in_georgia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6363/9703/files/6954840197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2461/2509/files/mexikopegisopodevetamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9249/5521/files/pastor_arnold_murray_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/4091/5615/files/korufelim.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_off00009c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C26 5012 bytes
SHA-256: 89c5c1f2bc4127cc9cb384b6278690040441744613056aef05ecbe30063a4df7
font_01_sfnt_off0000ad3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD3B 12600 bytes
SHA-256: 56354567b120cf41b7a3558144109605e4e66c4ce96ad2bb04c797a08d325885

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