Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1ef31e709346f3…

MALICIOUS

PDF

39.0 KB Created: 2020-11-06 03:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: a3f9c9ce94076cf3cb828ce077fe8b2d SHA-1: 3b060654f2ed75e5902287c5b27c7ba109afada1 SHA-256: 6e1ef31e709346f31b0d97ae5074f232ffddff35bf2de116ec81ccf44312ee55
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://trafficel.ru/123?keyword=chapter+9+chemistry+test+answers PDF link annotation
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vigirupiruwovilav.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/1647941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f8a9ce361a3a.pdfIn PDF document text
    • https://madovokego.weebly.com/uploads/1/3/1/4/131409717/zelugiluwif.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/nawumewiwukik.pdfIn PDF document text
    • https://lukafove.weebly.com/uploads/1/3/4/6/134655473/f49acc.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/6af9cd1b-02ff-4300-82a2-8ebd2b8ac89a/pokemon_te_elijo_a_ti_pelicula_online.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/tibopewawutoposinumej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71466027-224f-43f8-a078-51b071cedc65/c_programming_balaguruswamy_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3b9a51-fe1f-4e81-9af1-d2086576e118/rekamuninegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d88974c-8cd8-41ca-a3b6-41ee96499f04/12550425084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/945d3a18-65c3-4a57-a11c-763016b699d4/caldereta_de_marisco_karlos_arguian.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_off0000573f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x573F 5396 bytes
SHA-256: 35f2562e2739ecdf30cc8ab97e07f4d8cdbaa4a781109479539c0f717b96fada
font_01_sfnt_off0000697b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697B 10952 bytes
SHA-256: f6ad1e7bff083861e7d6d81c01892737e5d325818d29b92e2a42cdf956f658b7