Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fb2c663614814d…

MALICIOUS

PDF

41.4 KB Created: 2020-11-09 06:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: e5d294dc65df27983398d4e7041f9ae3 SHA-1: 7cf4813fd24358f196db2c9cfd50c1bbe01093a3 SHA-256: c0fb2c663614814da2e2181d4f47532bf52107ef8356d41138fad2065d499529
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://traffset.ru/aws?keyword=mass+effect+3+best+mission+order+with+dlc PDF link annotation
    • https://gobisenuginofaz.weebly.com/uploads/1/3/4/4/134490447/e6b297.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/6958567.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/xupomorusokawowu.pdfIn PDF document text
    • https://rimidewazasi.weebly.com/uploads/1/3/4/3/134317879/5112357.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://tevarew.files.wordpress.com/2020/11/88608638079.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bfdc222-a8fa-43c8-922e-f7881e6952f8/jekojupasixamodunerus.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/tutukapiretarizuwabimibil.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/bricks_intensive_reading_2_answer_key.pdfIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/936a3a39-4db5-4fd8-b53c-24cc59b93532/nujaxopub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52561ae8-8b63-40d2-8f8d-c988aa3fdf72/aararo_aariraro_tamil_movie_songs.pdfIn PDF document text
    • https://milosozefij.files.wordpress.com/2020/11/28829222792.pdfIn PDF document text
    • https://felumas.files.wordpress.com/2020/11/60978286895.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_off000062d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 5664 bytes
SHA-256: 2243b404e17c4013e1b88747a65e4176da626fa644f665cd33553fa73ce605a9
font_01_sfnt_off00007602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 10140 bytes
SHA-256: bafb7cb33d54c531cc99acea35aa90fa6a5b010c6bbe3c97c51700b8c8974b3a

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