Malicious PDF — malware analysis report

Static analysis result for SHA-256 988cf601ca951b0c…

MALICIOUS

PDF

44.5 KB Created: 2020-11-09 02:54:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: b0ca9b30342348c5acf5da4b2fe256a6 SHA-1: 840c58176066aabddd110f8ce81bc71fe4ccecf9 SHA-256: 988cf601ca951b0c93f2e2d0620865715305c3bb90a355ab89da5db4fd392a27
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=agastya+nanda+education PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405895/normal_5f96eeaf9d845.pdfIn PDF document text
    • https://gunulavosaki.weebly.com/uploads/1/3/4/3/134374607/zoxejis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f872ee21c2a6.pdfIn PDF document text
    • https://jejaxome.weebly.com/uploads/1/3/4/4/134443668/vokikolezalem_pofitakagemasir.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/aa24d64ed233.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/linudunujow.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/posepovulabol_dakazuvitametij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5f8a465cb8cb9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e7a823-8875-4cc6-951b-8dd0252032af/sentence_structure_lesson_plan_first_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/acog_guidelines_preeclampsia_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/12690739113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6373c8e8-dc4c-46da-8c01-04c93757c6a8/nafivimo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2d52790-660b-4ec8-8fe3-603aafe30b93/time_auto_sales_latonia_ky.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d82e7820-5b1d-45af-ad87-f1e33e0028a0/46352617155.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/iep_direct_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/dafalebinoza/words_that_start_with_recu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAB 5072 bytes
SHA-256: 1c070186ac91910514f5c495b435ffd77abca6158dd6a4575d022226cec39306
font_01_sfnt_off00007f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0A 11188 bytes
SHA-256: 8fd38b76e5c70c86320d74077b1e9f226ab2b624a112d05bb20108bab03c7ef4