Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e89ab974eded2c4…

MALICIOUS

PDF

48.6 KB Created: 2020-09-30 02:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 01a38f8f7bb3d62016ea93e84a639ae3 SHA-1: 564b433dfde97dfa2a2a36f6edc8cb20f4eed8a6 SHA-256: 9e89ab974eded2c4e9449ecca010a7e40f3584d16d088872c1c76fafcdaaa9af
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=meteorological+disasters+pdf In PDF document text
    • http://files.disarmingdoomsday.com/uploads/1/3/2/6/132681928/duvawuwov.pdfIn PDF document text
    • http://files.crewdson.net/uploads/1/3/0/8/130873782/4760714.pdfIn PDF document text
    • http://files.isenterprises.net/uploads/1/3/1/4/131455463/5289298.pdfIn PDF document text
    • http://gekip.magnoliachapter14oes-pha.com/uploads/1/3/1/6/131607662/talakuziwipas_koxubezoset.pdfIn PDF document text
    • http://nobef.flamencoinsideout.com/uploads/1/3/1/3/131380600/ef4f6b8f9ec.pdfIn PDF document text
    • http://files.personalizedmindfulness.com/uploads/1/3/0/8/130874090/0575bf464a.pdfIn PDF document text
    • http://files.raritybycasey.com/uploads/1/3/1/3/131380482/f28e8709662.pdfIn PDF document text
    • http://minijamez.saltopiasalts.com/uploads/1/3/1/4/131437693/4139512.pdfIn PDF document text
    • http://bikezag.sunshinecoastcelebrant.net/uploads/1/3/2/6/132680981/e88b8f7fc10e.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/634d079c-65a6-4ed2-9710-6c4bab489dbd/11739037752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1ea3be5-ab83-457d-8518-3280049a24d0/33810307496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/xopuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/bonner_elementary_school_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/9850/5115/files/the_waiting_room_full_movie_720p.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_off0000718d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718D 5012 bytes
SHA-256: 6654bd9a7e9dedf78e225b2ef43c5d72093d11d4e88ad3f9df2f1e07ab72428d
font_01_sfnt_off000082bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BD 10632 bytes
SHA-256: 98c2902e6dcc91dd6bdaf21e471c59351a74bb7f82d7df0c21ce934238cc5db3
font_02_sfnt_off0000a709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA709 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3