Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f08cc08d1a93b4…

MALICIOUS

PDF

37.8 KB Created: 2020-10-26 20:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: b066fd2667209c6dc97207774f37fd74 SHA-1: f48fa739cdb804983eb66b7491c80069c56c406e SHA-256: 68f08cc08d1a93b4ad43b4d582f42393fb6a63a0ceb55c28a1a866f4c045c642
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://ttraff.link/123?keyword=liberty+county+sheriff%2527s+office In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366008/normal_5f89b1331b1cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f8715e81fb1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f8926d228e66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f8c0a6a55901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8719bd1d00b.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1158663.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/vedunu.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/lituxi.pdfIn PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/pejaramo.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/zudamivajet-xemezusokufobin.pdfIn PDF document text
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/xaxukikebimetewuv.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005393.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005393.bin)
    • https://uploads.strikinglycdn.com/files/78c073ec-796b-4e90-90d5-a3a9704b3d05/33451243417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eb531ed-8e1c-49a7-abb0-5b98f65fa01c/katuvadinupeduv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af74600-a7c5-4500-9ce1-63bd447e1207/bojozekujixefuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b81be7-9b25-4127-b89f-2b3037530992/51002554480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f82afe8-1351-40bb-b4fa-6541fff7e831/download_ulead_video_studio_9_full_c.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/54061336779.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/6841397231.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/cellular_totipotency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515fe2b9-1b0e-480d-9acf-579bdb46e098/vibawebikenudizufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc14284a-2d68-4da7-b4c7-18293a9fe106/43826863050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528d6b36-e760-4fff-90de-8db27bf9772a/56394627615.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 extracted file (font_00_sfnt_off00005393.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5393 4944 bytes
SHA-256: 9c360beebcaeafbed848802e646b0672132ba7d0aa17fb7c37736dd84df5f34b
font_01_sfnt_off00006472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 10596 bytes
SHA-256: e4465c20380b8fe5ae28315f54ed8bae91db8df292354eca200e1b9b31f7123f