Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a9a810630b7bb1…

MALICIOUS

PDF

78.3 KB Created: 2021-09-23 19:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3da7ca304914ec0dcc55ee52aa55ef10 SHA-1: 7addf14bb5f8885500f523ecb3a0198ad0f6515c SHA-256: 80a9a810630b7bb16092c320ad502d920a0001eacd44cf70811a80121e32a9cc
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://laborke.ru/uplcv?utm_term=autocad+2017+crack+serial+number+and+product+key PDF link annotation
    • http://lonerangerfanclub.com/ckfinder/userfiles/files/42358255682.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/75d53847efd1afb65ed92039cba7599c/11283892237.pdfIn PDF document text
    • http://sunpix.ru/img/lib/file/5070132397.pdfIn PDF document text
    • https://rm-parketi.si/uploads/31856565149.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/milizigeno.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/juxapoluvusijinoduxari.pdfIn PDF document text
    • https://anzhero-sudzhensk.verlauf-ekb.ru/admin/ckfinder/userfiles/files/xujetiga.pdfIn PDF document text
    • https://totalsewa.com/userfiles/file/43871327354.pdfIn PDF document text
    • https://washlounge.in/ckfinder/userfiles/files/25757609149.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/gaworazoti.pdfIn PDF document text
    • http://lenosada.sk/editor_uploads/files/36600620971.pdfIn PDF document text
    • http://oldadmin.k12cart.com/media/files/45493817437.pdfIn PDF document text
    • http://stonestudio.pl/files/upload/file/kadogowivufolesazolob.pdfIn PDF document text
    • http://floridadressyourhome.com/uploaded_files/userfiles/files/43982658454.pdfIn PDF document text
    • https://gitteszoneklinik.dk/ckfinder/userfiles/files/9012057611.pdfIn PDF document text
    • http://www.multigacos.com/admin/uploaded/fck/file/54330136738.pdfIn PDF document text
    • http://werkschoenenverkoop.nl/images/docman/files/guveroxugopuromadexefulip.pdfIn PDF document text
    • http://st-ark.it/userfiles/files/xuvupixi.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16147b59c68799---temoko.pdfIn PDF document text
    • http://phongkhamthienhoa.vn/images/files/27997528081.pdfIn PDF document text
    • http://icr34.fr/icr/icr34.fr/www/files/files/40278068281.pdfIn PDF document text
    • http://texinpack.com/uploadfile/file///2021090719220796.pdfIn PDF document text
    • http://bftt.marketsearching.com/upload/files/57526116774.pdfIn PDF document text
    • http://nemalipics.com/tepaxitidotemosu.pdfIn PDF document text
    • http://k12kos.com/ckfinder/userfiles/files/53321973216.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://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_off0000c94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC94A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE161 11448 bytes
SHA-256: 06c80163acc598522133eea4c739a322392d0ca23c2508b3ebf633f29046336b
font_02_sfnt_off0000fc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 18116 bytes
SHA-256: e58ea538c9fde8e58d93d43e5fa4bf42c64c208ef95f381821da458558764090

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