Malicious PDF — malware analysis report

Static analysis result for SHA-256 49083725224e2f63…

MALICIOUS

PDF

42.0 KB Created: 2020-10-25 17:30:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-02
MD5: 65a1f125236fd482cf4d434d342d56b2 SHA-1: 60a29aca368f8b0ffb914ed8c5facef67528ff9b SHA-256: 49083725224e2f63b008007575a9cec36e332909534491162bb19e9d38d84b8f
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/aws?keyword=download+advocates+remuneration+order+2014+kenya+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366959/normal_5f8fe973a4e8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375342/normal_5f8ccd7bd1923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f8d4387598f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369179/normal_5f888a6196c8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f8a43fa1dad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5f882bcf63755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377115/normal_5f91b99784cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5f922b56c57e6.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/salagarifug.pdfIn PDF document text
    • https://fosogaji.weebly.com/uploads/1/3/1/4/131455903/vovovi.pdfIn PDF document text
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/bafakoz-mefosatojive-vizezefazarerim-bufibojuz.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/1819393.pdfIn PDF document text
    • https://gomemetunugup.weebly.com/uploads/1/3/2/7/132712315/najuwik.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/575d6950ce6.pdfIn PDF document text
    • https://nikokabiliru.weebly.com/uploads/1/3/1/4/131409463/5723833.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/larerezufedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000642c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000642c.bin)
    • https://s3.amazonaws.com/leguvefu/apj_abdul_kalam_books_in_marathi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/52613607880.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/aide_memoire_tuyauterie_complet.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/network_administrator_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/2018_dallas_cowboys_football_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/7549/1752/files/android_9_pie_download_samsung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4387/9594/files/kipagokatogovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9832/4638/files/93038226381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4475/6901/files/america_story_of_us_superpower_worksheet.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_off0000642c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 6032 bytes
SHA-256: 529ace40c76c9e7901c80b3e37126165d6b6727fa6708ea4f575908a7d24e0e0
font_01_sfnt_off000078cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CB 9728 bytes
SHA-256: 56b8bbeb82a3ab5eb9a000a70289e1e1c8e20c2cce0a15bba4cd0da3fb4929a8