Malicious PDF — malware analysis report

Static analysis result for SHA-256 58765cb6d8aea4f3…

MALICIOUS

PDF

47.3 KB Created: 2020-10-15 23:24:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1d2f7ac50ea0957516a2ed2ae6910be7 SHA-1: 29043ff269352cd7c7bf12d732ff82b77232bfef SHA-256: 58765cb6d8aea4f30989a80f47781d3e14c6cc2c2794ac104ef8fb4294a6ec30
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=download+drastic+apk+mirror In PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/vapujenipujij_lutam_jasixajepubese_lumedilozen.pdfIn PDF document text
    • https://kafasomawupi.weebly.com/uploads/1/3/0/7/130775431/8c1d194.pdfIn PDF document text
    • https://jurizimobijagi.weebly.com/uploads/1/3/0/8/130874317/xajuvigijakevaz-jujigejaj.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/kuwekewugi.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/8536469.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/4521781.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/4925866.pdfIn PDF document text
    • https://site-1039319.mozfiles.com/files/1039319/pewarofegepun.pdfIn PDF document text
    • https://site-1042009.mozfiles.com/files/1042009/mawupowopixiw.pdfIn PDF document text
    • https://site-1043438.mozfiles.com/files/1043438/sitolaguzizebobaget.pdfIn PDF document text
    • https://site-1042509.mozfiles.com/files/1042509/37286473497.pdfIn PDF document text
    • https://site-1037922.mozfiles.com/files/1037922/taxavabezi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5f8883f2ad674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f8893abc5aa6.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/6cf98074-421c-4966-b8a0-b88248e013bf/5825259933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cd8989b-c075-43fc-9e5e-4dc87d7e935f/wetasibemomavisabodusupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8775e7c-ead9-4381-90ce-d1f0b116012d/roduvewasojefolipoxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc5560b8-bc78-415c-beb7-2ddf3073e539/52491893425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7242/5636/files/how_to_put_sorority_position_on_resume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4528/9127/files/36054410850.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7E 2880 bytes
SHA-256: 619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
font_01_sfnt_off000068bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BC 5044 bytes
SHA-256: 975f777d99970553d90054e309400f4f665f8f35f694655c33f53745b3973601
font_02_sfnt_off000079d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79D0 12176 bytes
SHA-256: bf9f0192847bb9e7f79ee860b2e872874bedc4cfc87b32392b3c38cffc146e28
font_03_sfnt_off0000a148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA148 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34