Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded94ac3d71adba2…

MALICIOUS

PDF

43.1 KB Created: 2020-10-26 06:54:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 1e16504d80d9cc2f5201a1632e7f1a76 SHA-1: 36690108be023f09786d0030d4ca2ac0cfeee2f9 SHA-256: ded94ac3d71adba28bcfd94f69cb25526ddbee48effa563fee5d9d363247417c
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/123?keyword=types+of+plastic+and+their+uses+pdf In PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/131740.pdfIn PDF document text
    • https://dewubonate.weebly.com/uploads/1/3/4/4/134466502/ravamezodij-kefenuk.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/17d0ebd6de52.pdfIn PDF document text
    • https://wozuwonasanava.weebly.com/uploads/1/3/1/4/131483955/4633509.pdfIn PDF document text
    • https://direfuxapiw.weebly.com/uploads/1/3/4/3/134371974/3819205.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/2915921.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/rolumesenozovam_jotubon_zojogejinibom_bitigazada.pdfIn PDF document text
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/1469b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384296/normal_5f945aabc3cdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f942ebedb40a.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/9e854407-1e0f-4c55-b0da-a7474f6d970c/bovobonanevikesijokilop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d72aa8-6766-4275-ba08-b9b4fee5f7f4/junulewaxoxakojop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75137369-8c7e-44f9-a562-5292b098a2ed/bopivinibutupesajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3374/1480/files/11042835036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/9321/2318/files/android_version_updates_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6802/5751/files/disuw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3378f20d-b5a1-4e98-b3f4-63f9fd262990/when_is_endgame_coming_out_on_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f179c8b3-a17a-4fee-8540-16265d3726c8/wazefebafopeponodaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e06c4f-0b82-4cce-b453-243be50d9e63/losonorevegiwuza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7213e16e-2431-4c57-b3ce-401a3d7e5f05/28178696971.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a896c194-0849-4717-a46b-51119b6cb780/keteniwumonosase.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_off00006b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2E 5296 bytes
SHA-256: 7f3998fceca6f2d34ec9ff91375829c1dff88f81f19947996e250b59136bafa8
font_01_sfnt_off00007d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 9912 bytes
SHA-256: 76a063bbe0fe17e673c42a80a167ada95e30dc49d4100ae05c2a0665c32efa97

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