Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba967fd9bc323bf…

MALICIOUS

PDF

51.1 KB Created: 2020-11-08 10:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: daf048e0a0c36813326b7b169cc5dd31 SHA-1: 52af79f60e7e1b53085c75633ca04523159faae1 SHA-256: 9ba967fd9bc323bf663ae41f9ad9519bac17f461bd3fc34cbf406897a2bbc310
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/123?keyword=filmywap+xfilmywap+online In PDF document text
    • https://moxowikoxub.weebly.com/uploads/1/3/4/0/134096036/3549733.pdfIn PDF document text
    • https://zodovamerevi.weebly.com/uploads/1/3/4/3/134316438/sotafejazosago.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://kizelanurul.files.wordpress.com/2020/11/rigepafi.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/buzaxukabufutop.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/27654136259.pdfIn PDF document text
    • https://jirovef.files.wordpress.com/2020/11/commandos_full_pc_game.pdfIn PDF document text
    • https://mopuxupu.files.wordpress.com/2020/11/19764246295.pdfIn PDF document text
    • https://zugibiraw.files.wordpress.com/2020/11/94258218965.pdfIn PDF document text
    • https://s3.amazonaws.com/xedobox/definition_of_population_and_community.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e7208fc-4890-40c5-aa02-0945b593260d/didasevam.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5708 4992 bytes
SHA-256: 84098764bf202803298818a4222a92db097d903953b076e166fb98a68f49a67c
font_01_sfnt_off00006817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6817 3720 bytes
SHA-256: a7c194c348f4bc26aad06ae1fa1eadf76503a3aca856ff80314c3d87a816eea9
font_02_sfnt_off0000736c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736C 6148 bytes
SHA-256: 0b8363bc9e07cf89205331d27bc1c31e4fc91592bb846ce71245372e642e4983
font_03_sfnt_off0000834b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834B 9796 bytes
SHA-256: 48f221b680419f26e0281be388017b147580df0cd89fc939ba7c8488c1068c71
font_04_sfnt_off0000a514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA514 7656 bytes
SHA-256: b617c8f117d9a427155f2e1f4f84b72b533b06ab983fac2721215f2d8d2dbc5f