Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd97af0e5e8405f5…

MALICIOUS

PDF

43.7 KB Created: 2020-10-02 12:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bc1225a075eee1ab31f22ff4247eb7e9 SHA-1: 14f037de13d8c120408e7dca74467856c118cea9 SHA-256: dd97af0e5e8405f5aadad01c8a3b3690d59edc87729b22335336ac4a49260510
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=harry+potter+myanmar+ebook+free+download In PDF document text
    • http://dorag.mashed-up.net/uploads/1/3/1/3/131379116/rilati-wabaju-riwudopupuxowi.pdfIn PDF document text
    • http://files.lavernesartpotfolio.com/uploads/1/3/2/6/132681664/xatonigevonu-laxogu-wadedogelowaxi.pdfIn PDF document text
    • http://supuviju.featherriversc.org/uploads/1/3/1/4/131406893/zejodupanitu.pdfIn PDF document text
    • http://files.kauaifoodofthegods.com/uploads/1/3/1/3/131381946/wogojujedoz.pdfIn PDF document text
    • https://site-1039385.mozfiles.com/files/1039385/91211810647.pdfIn PDF document text
    • https://site-1038531.mozfiles.com/files/1038531/58913981826.pdfIn PDF document text
    • https://site-1038849.mozfiles.com/files/1038849/dijanelafigovunoriluj.pdfIn PDF document text
    • https://site-1036996.mozfiles.com/files/1036996/46132146230.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/minile.pdfIn PDF document text
    • http://fotikiz.hhollisapply.com/uploads/1/3/0/9/130969953/9265736.pdfIn PDF document text
    • http://files.casswomack.com/uploads/1/3/2/8/132815912/moripebetawisemam.pdfIn PDF document text
    • http://fitak.stocktontrapandskeet.com/uploads/1/3/1/4/131453780/56bb908d2.pdfIn PDF document text
    • https://site-1039646.mozfiles.com/files/1039646/35754403249.pdfIn PDF document text
    • https://site-1038453.mozfiles.com/files/1038453/gorulurerob.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
    • 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_off00006017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6017 5108 bytes
SHA-256: d35447aa61b3d4b1c1a9d55d03b45d2869035287fe5093d2c7a539274a874f40
font_01_sfnt_off0000716f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716F 10072 bytes
SHA-256: e1711fec90ade7b3d08cd15fca908fd57aef1d1a60cd7139c6e5577228f21373
font_02_sfnt_off000093cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333