Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9211c543259a136…

MALICIOUS

PDF

44.0 KB Created: 2020-10-05 02:34:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c4e0bc1ed0be1f2472be21544fc0c522 SHA-1: 16ca8f2943b0d06e22c14a762c193640e729602b SHA-256: d9211c543259a1365937fb269d86029df933d5d950b3ae6e4ac4c100c8488541
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=wing+chun+techniques+pdf In PDF document text
    • https://site-1044518.mozfiles.com/files/1044518/tebopivimoxepanefedag.pdfIn PDF document text
    • https://site-1042492.mozfiles.com/files/1042492/degonulefanejixoxe.pdfIn PDF document text
    • https://site-1037120.mozfiles.com/files/1037120/48763236321.pdfIn PDF document text
    • https://site-1039149.mozfiles.com/files/1039149/visikuzaluwux.pdfIn PDF document text
    • http://bubuzuve.hollowlegbread.com/uploads/1/3/0/9/130969600/tusetabawokidi-jokijaxite-robomelezokol.pdfIn PDF document text
    • https://site-1038837.mozfiles.com/files/1038837/90118694268.pdfIn PDF document text
    • https://site-1037911.mozfiles.com/files/1037911/siwuwelafoxeditas.pdfIn PDF document text
    • https://site-1039563.mozfiles.com/files/1039563/61094192334.pdfIn PDF document text
    • https://site-1040038.mozfiles.com/files/1040038/suvajumuvawul.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://cdn.shopify.com/s/files/1/0434/5085/9670/files/springfield_catholic_high_school_football.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8854/2872/files/26826288229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5701/6732/files/palogabat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7752/3861/files/mope.io_unblocked_weebly.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_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 4992 bytes
SHA-256: 09d8d77ed4857fbea11fa50874151187956e253a45d736016f385bd8c9a6872d
font_01_sfnt_off00007352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7352 9988 bytes
SHA-256: 0e969fc98cb49c4a320fa957a43167cc99a0349267f303702a500a9740d1f827
font_02_sfnt_off00009521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9521 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2