Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0469f7806b55ab0…

MALICIOUS

PDF

80.2 KB Created: 2021-09-07 14:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8713c5a45a1f7545c9cfdeb747529e25 SHA-1: c46cbc5aa271cba96ad839b427275ce9d8d416c5 SHA-256: e0469f7806b55ab0d4c034235e863f05ce3aed64fce88f32bd05964c3e6730cb
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites or download further payloads. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://alrabbancapital.com/file/files/98144696330.pdf In PDF document text
    • http://acudrved.com/ckfinder/userfiles/files/keximiwibixow.pdfIn PDF document text
    • https://quatcongnghieput.com/uploads/files/jipavute.pdfIn PDF document text
    • https://egokituz.org/files/galeria/files/moxom.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a8ccce95048---40229303647.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c195ede7d---jedubafulelodimeb.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a896c9eecd1---61462707743.pdfIn PDF document text
    • http://e-sheremet.com/img/71796989200.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/wurijakoragiza.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc011df160---88446321375.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/gixoxitowi.pdfIn PDF document text
    • https://aodaixuan.vn/app/webroot/upload/image/files/44998925272.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/b66dcf3e8db101131c6fccb001f251b8/xakakipatumomawig.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/81051929452.pdfIn PDF document text
    • https://h1t-urlaurora1-turbo.com/contents/files/gepivitum.pdfIn PDF document text
    • http://collegium-connect.nl/ckupload/files/tizopawolezubonuw.pdfIn PDF document text
    • http://forresterfamilyreunion.com/clients/c/cc/cc72bfd2512333311cc1ef5a4fdef90f/File/vosokepopezerupi.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160dd842dbe584---82098309414.pdfIn PDF document text
    • http://hoaisonland.vn/upload/files/lewonajidonaxurutebetim.pdfIn PDF document text
    • https://alajuusa.eemedia/contents/file/kujonibagujugebireb.pdfIn PDF document text
    • https://vestol.bg/files/file/dozetofifabugejad.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/1f691f9957836dff77f77d5c57313de6/xemoxevexet.pdfIn PDF document text
    • http://colegiosantarosa.com/uploads/imagem/file/82180237663.pdfIn PDF document text
    • http://speaklifeiamgreatness.com/files/files/riruvufo.pdfIn PDF document text
    • https://die-elke.de/cms/elke_page_files/file/nomujizamedigexiverepove.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=punctuation+marks+quiz+pdfPDF 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_off0000d2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 11000 bytes
SHA-256: 710fe6ade9538697039e7ac715d1f5351b018fcc369c27fca40b79885bab455e
font_02_sfnt_off00010437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10437 18204 bytes
SHA-256: c7340796a448d8b6331eca6908263bcd9425f60781d5fcf7f5a0759c02036915