Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0dc0d55ebcce2b…

MALICIOUS

PDF

83.6 KB Created: 2021-09-03 21:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 0e985b149ed44f92342190b9587b88b6 SHA-1: 9cdc58fad2e3c9a1e28557998ebb0a1189e15dcc SHA-256: 2d0dc0d55ebcce2bfa8c22a66c21b3885c2ca60c25f4fcab58aaa8c858c2c066
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV. It contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS upload storage or disposable hosting. The primary purpose appears to be directing users to external malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://slavutich-media.ru/userfiles/file/lewagidijonifexurowewozo.pdf In PDF document text
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cb1768471---mibafokufag.pdfIn PDF document text
    • http://splogservice.ru/content/files/widajusasagupepek.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b078862f877---5426637166.pdfIn PDF document text
    • http://enricobarraco.com/files/73952303527.pdfIn PDF document text
    • http://turinhotelcompany.com/userfiles/files/44774057209.pdfIn PDF document text
    • https://mmszke.hu/files/file/90499798387.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/781affdac99ece67c9e5c3c859098b69/femuwodobaxu.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/88132497274.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dae1882160---sasolofazedowuxujife.pdfIn PDF document text
    • http://hum-lucknow.org/test/fckeditor/file/wojatuvu.pdfIn PDF document text
    • https://leanuslab.com/UserFiles/file/pawozafanaf.pdfIn PDF document text
    • http://roanfamily.net/clients/0/01/01b24a6c100194bbc8678883f3cd4a53/File/lezitexufisesejusijavabo.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/021rvsgtlfc5hj6m7lak9nnp03/domixarufuvegarajibalid.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a321bd43e---vulobelisofora.pdfIn PDF document text
    • http://niengrangchuyensau.com/upload/contentFile/file/27624063014.pdfIn PDF document text
    • https://demircanticaret.com/userfiles/file/pebiwakaxoloz.pdfIn PDF document text
    • http://nhasachthunam.com/upload/files/14209907250.pdfIn PDF document text
    • http://wefocusdesign.com/upload/files/bukij.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161174f12af57c---85460547146.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/1ce9a20ec7e7381e2a0903adb8ac3e59/fetuwod.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/g9pk6qe0bfu7q4tlag7qlhonib/60170644504.pdfIn PDF document text
    • http://videofilm-tv.ru/content/File/xabemujodile.pdfIn PDF document text
    • http://hotstamping.pl/files/file/70760017411.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=o+milagre+da+manh%C3%A3+em+pdf+gratuitoPDF link annotation
    • 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_off0000dab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB6 20496 bytes
SHA-256: cda8467ee08e8d4a414628c99f1e2b5a47ca741916e52e1a7a734b38edc64dfb
font_01_sfnt_off00010cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001250c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1250C 11168 bytes
SHA-256: e5c209aeae0b761af91e949e9b0f52d64f490334fea6c120df1507172f50686f

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