Malicious PDF — malware analysis report

Static analysis result for SHA-256 3293bc5d68fbe8c1…

MALICIOUS

PDF

50.7 KB Created: 2020-11-09 00:05:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 39197bbb674c11558faf0ecd730760f2 SHA-1: 7c57326249e4ea78f49f1cbce8fac1142a7b2ee6 SHA-256: 3293bc5d68fbe8c1c46fca7d388bc3e9899fb7649d019197a4d74efe86450ecb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/aws?keyword=the+wonder+pax+heating PDF link annotation
    • https://poraduke.weebly.com/uploads/1/3/4/3/134385775/a8f5f865221a041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f8aa5cf1d1be.pdfIn PDF document text
    • https://kalodobig.weebly.com/uploads/1/3/4/4/134432105/riziraxopuvo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f964d319370d.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/245e0fd4.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/8368504.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/1421676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383912/normal_5fa2a6a485c5b.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/bagisegodex-famasunaxuku-bugofotebisig-sisajiriwa.pdfIn PDF document text
    • https://kovipokuvukos.weebly.com/uploads/1/3/4/4/134497495/6283935.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/nimudilanopev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.pdfIn PDF document text
    • https://supigakesev.files.wordpress.com/2020/11/25358168196.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/back_of_the_leg_muscles_and_ligaments.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/solar_system_project_5th_grade.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000711b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x711B 5120 bytes
SHA-256: ed2d3eb4875d18c19d0b01c6f7d5e84136b003a0e43f9286821c72eae6dc43a0
font_01_sfnt_off0000829e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829E 11004 bytes
SHA-256: eb6457a7962ae90017eb30515c1e9ea5a85521239d51e992aa5b4d06b479bedd
font_02_sfnt_off0000a80e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA80E 16428 bytes
SHA-256: 4de993fdf65467371df45ae604b44199a0f9db96dd1987693d1d6f13b22e4334

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