Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee53e90b814a9f7…

MALICIOUS

PDF

72.3 KB Created: 2021-02-11 21:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eac361f01a1458b103131362d9086178 SHA-1: 4b1b39c5d718d84109c840e9013fb28aef70be4e SHA-256: 1ee53e90b814a9f7f170cfd42f24ae8f9d0d42d9119e9a8c84b137f9d8f8c605
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/wix?keyword=measuring+mass+worksheet+grade+3 PDF link annotation
    • http://biomanua.website/legadoranirhzyl7.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/dOPHGib/naxajuvidirukigezuf.pdfIn PDF document text
    • https://nuzukozifazo.weebly.com/uploads/1/3/2/6/132682871/ratokikovopo.pdfIn PDF document text
    • https://bafupenog.weebly.com/uploads/1/3/4/1/134131575/976f46.pdfIn PDF document text
    • https://zukolipiniroti.weebly.com/uploads/1/3/4/4/134494738/5b50558f05.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/gehfgeH/real_followers_get_likes_for_instagram_app.pdfIn PDF document text
    • https://melekutiruj.weebly.com/uploads/1/3/2/7/132740408/aed0c3c2.pdfIn PDF document text
    • https://zopokirupinurow.weebly.com/uploads/1/3/1/3/131381130/lemavogote.pdfIn PDF document text
    • http://on24-system.club/burn_the_confederate_flag_dayka6cg.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/3Qdjgg0/39880751367.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/4998619.pdfIn PDF document text
    • https://cdn.sqhk.co/pifonode/khhxTI4/boduvok.pdfIn PDF document text
    • https://ropexosuwewi.weebly.com/uploads/1/3/1/3/131380205/dakafarunok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dalava/76509166889.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/vemoru.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/traditional_values_coalition_california_voter_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/reading_answers_of_maximisers_and_satisficers.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_off0000ddad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAD 5532 bytes
SHA-256: 7f77614daad492733b7a2d97ede1271e51a50f220625d329c8cc6d188ea97ed6
font_01_sfnt_off0000f071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF071 10304 bytes
SHA-256: 0408c645d58c2965c7a70a630ab4d717178e2c04d202ee7c51b0ce3979a73e0b

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