Malicious PDF — malware analysis report

Static analysis result for SHA-256 e64aa4ede389c699…

MALICIOUS

PDF

69.4 KB Created: 2021-10-01 07:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e6b77ea83d38ec6e1d304e2f2c1f9cdb SHA-1: 1febfce5edb865d9357cb6300fb6493720368cb4 SHA-256: e64aa4ede389c69945830948c7455ab300052edbe3f9e46cf27ebbb9ee3864a9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm directing users to multiple external URLs, with several hosted on compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The file's structure and numerous external links suggest it's designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

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 https://skopjemuzikon.pmgrecordings.com/ckfinder/userfiles/files/63024148995.pdf In PDF document text
    • http://www.enredmail.com/templates/files/idCliente_/file/poxepowijewod.pdfIn PDF document text
    • http://easyhypermarket.com/userfiles/file/kaduvexofukonorapume.pdfIn PDF document text
    • http://kammatrans.com/userfiles/files/fedanimuroxebotuxuv.pdfIn PDF document text
    • http://heatexchangersolution.com/upload_fck/file/2021-9-2/20210902002825348819.pdfIn PDF document text
    • http://saint-party.com/media/file/68408225348.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/161538a9eb9bea---titokejikopu.pdfIn PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/92520651030.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/b24cc2187524110736c235bbc84d00fa/fujojikaneta.pdfIn PDF document text
    • https://warsztatgdynia.pl/app/webroot/media/files/ziletimi.pdfIn PDF document text
    • http://123podkrovie.sk/editor_uploads/files/67959704882.pdfIn PDF document text
    • http://cssh.es/img/file/sasiwotalisa.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a65a16c176---4437657927.pdfIn PDF document text
    • https://ph789.com/pinhsuan/files/file/62092377479.pdfIn PDF document text
    • http://www.atsamuihaus.com/image/upload/File/rupewuragum.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/163122946061407f264e2b4.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161514aba06beb---juwozetupazanopamosumez.pdfIn PDF document text
    • https://fentesmakina.com/paket/upload/files/lakuzubuzokofazel.pdfIn PDF document text
    • https://finliz.lt/i/File/buvinafe.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/difirofelapigurasunum.pdfIn PDF document text
    • http://koyomisushi.com/uploads/files/gobevaxe.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/pamasivizeravisezovabike.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/90001233863.pdfIn PDF document text
    • http://comlark.ru/userfiles/files/fusewedorevuperujus.pdfIn PDF document text
    • http://heydarbaba.org/resimler/files/tubojovozonuvo.pdfIn PDF document text
    • http://resortcrimea.com/ckfinder/userfiles/files/komuviguf.pdfIn PDF document text
    • http://www.salpasafarit.fi/tiedostot/files/tadoma.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=dua+after+eatingPDF 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_off0000b2df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000caf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAF1 15352 bytes
SHA-256: 56b16ef38738fa543eb828ced89b7f3e33e5374a1c06f43601823ff733bda824
font_02_sfnt_off0000f17b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17B 10156 bytes
SHA-256: 536eb797d9889f8a1057874b86decf30236021b5daf92a7a43a8de20b47c6d90

Open this report in the interactive analyzer, or submit your own file for analysis.