Malicious PDF — malware analysis report

Static analysis result for SHA-256 676838d095fe9914…

MALICIOUS

PDF

75.3 KB Created: 2021-03-07 00:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9ddb50a84502c5961a50f342eea697b5 SHA-1: 157215f839660ac6876b8e5ca70e9ceade0ad148 SHA-256: 676838d095fe99146faa1616a5d4e51b2a60184bf20a5e6249ee47d2472182b6
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://gimoguvi.ru/wix?keyword=act+2+scene+5+romeo+and+juliet+summary PDF link annotation
    • http://lupazul.mywebcommunity.org/unity_asset_store_sale_2020.pdfIn PDF document text
    • https://fukenavu.weebly.com/uploads/1/3/0/8/130813663/judumebupiwimizidega.pdfIn PDF document text
    • https://xaredoluvowa.weebly.com/uploads/1/3/1/8/131871785/zomeki_rovifirejowef_gasakado_xowirufenom.pdfIn PDF document text
    • https://penomagara.weebly.com/uploads/1/3/2/6/132695387/ziwasojudazeteditat.pdfIn PDF document text
    • https://kalizijowu.weebly.com/uploads/1/3/4/7/134733304/2432395.pdfIn PDF document text
    • https://sererepe.weebly.com/uploads/1/3/3/9/133999843/8016695.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/80376611076.pdfIn PDF document text
    • https://sinuvuliwazima.weebly.com/uploads/1/3/1/8/131871572/364838.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/60540192401.pdfIn PDF document text
    • https://rilavowa.weebly.com/uploads/1/3/2/7/132740415/dumafuvamoma.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/office_365_end_user_manual.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/bd49563acf0a.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/paxevugonodupu.pdfIn PDF document text
    • https://jurozujuzofu.weebly.com/uploads/1/3/4/8/134875655/tilesozib.pdfIn PDF document text
    • https://wonulabanasilod.weebly.com/uploads/1/3/1/4/131482851/d51315f.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/d4a7ed71-69b0-4ea2-8af2-167658b0a9b3/how_to_login_router_admin_pldt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e8d1603-2069-47bd-9052-423d68cd049d/what_does_les_mis_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfced132-66ae-45d7-a6cb-d66718a0b277/amazon_kindle_d00901_reset_button.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_off0000ea0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0C 5508 bytes
SHA-256: f1e324c429c0f3019f8c0f6255d53869dfd6f71d2914b8b90e26f105ee2188c7
font_01_sfnt_off0000fcc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC8 10328 bytes
SHA-256: aa2c19c6bf5117238418ad02454ef975b1defb75e0e1dc6aaa0ba49c12b9a6d0

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