Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c922e31c0b58ed…

MALICIOUS

PDF

62.3 KB Created: 2020-10-16 23:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 614017472cb0ee08af499b6fbe8772a7 SHA-1: 771c6c30bc63d0bcc8b271aacf9d764cdf56a302 SHA-256: 67c922e31c0b58ed7f122a4d6b445dd2ca4aee16d3f3f7081e30ab7650cec405
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://gettraff.ru/strik?keyword=learning+web+design%253A+a+beginner%2527s+guide+to+html%252C+css%252C+javascript%252C+and+web+graphics In PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/a7f91e4c9.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/2769223.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/9318012.pdfIn PDF document text
    • https://fekudumubaf.weebly.com/uploads/1/3/2/6/132681201/fazufate.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/3658150.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5f89489c0e78b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f888ddd1c9c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f87c0e47fcc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371247/normal_5f899f5cb5462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f8731e694c99.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5f872cac19ec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_5f89f790d3503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f88f015ab3be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_5f89180033a90.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/guwonajikawow-tededireri.pdfIn PDF document text
    • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/9528007.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.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/fd3cb694-2aff-4cf2-8cdd-e0bfa6f1f411/53674727637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84346783-b43b-4e63-8943-c411c9a2c72a/visizowofobipixirugotixig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2484/2391/files/dd_5e_shadowfell_creatures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3565/8906/files/harbor_freight_rome_ga_hours.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58BA 17276 bytes
SHA-256: ed41401d506b7b9646c47a1beb1a653480d7e20c421fbd22e09804fcb61c654b
font_01_sfnt_off00008fe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE8 5820 bytes
SHA-256: 2eb608e7be94fee342c7258e0d143020577268f10eff2f8aac6096775af564ad
font_02_sfnt_off0000a3a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A5 10376 bytes
SHA-256: 710f5e314369b0c9f959e9614215106d2526c8b727a70ff9328dc34a40b29a11
font_03_sfnt_off0000c750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC750 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f
font_04_sfnt_off0000dbba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBA 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c