Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd506a0f68c715a…

MALICIOUS

PDF

75.5 KB Created: 2021-09-12 19:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c8f06fd4b3decd3ccac3bd5830905c5e SHA-1: e1dd893d2c736f6e2a5daa0a5d1b807ff58d4720 SHA-256: 2bd506a0f68c715aac03139be758eec22e8541cf295e6402c895b077104b66c8
124 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to potentially compromised or disposable hosting. ClamAV detected this file as Pdf.Phishing.Trojan, indicating a malicious intent to trick users into visiting these sites. The structure suggests it's an attachment delivered via spearphishing, aiming to exploit users by redirecting them to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.2081

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/91154254918.pdf In PDF document text
    • http://nriloan.jctoursandtravels.in/files/xubokabelafebaz.pdfIn PDF document text
    • https://pastelbuilders.com/userfiles/file/nageselawot.pdfIn PDF document text
    • https://immsac.pe/sgi_userfiles/userfiles/files/39078449940.pdfIn PDF document text
    • http://foxgraphics.paulsfashion.in/files/nanixuligabosufeve.pdfIn PDF document text
    • http://orthocarecentroortopedico.it/userfiles/files/18009758720.pdfIn PDF document text
    • https://highlander-inn.com/assets/userfiles/files/15523919477.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/bivanewifimifotavapu.pdfIn PDF document text
    • https://ehlibeytalimleri.com/resimler/files/tosavija.pdfIn PDF document text
    • https://konyaalotaksi.com/userfiles/file/75578744295.pdfIn PDF document text
    • https://pianoinprimopianofestival.com/uploads/file/23433379649.pdfIn PDF document text
    • https://rajnnuhiddje.se/userfiles/file/pekidakiwifusipuxo.pdfIn PDF document text
    • http://tecksco.com/upload/files/59058438601.pdfIn PDF document text
    • http://gartenstadt-apotheke.com/userfiles/file/38665491572.pdfIn PDF document text
    • http://www.truca-taoules.com/ckfinder/userfiles/files/tupitazepo.pdfIn PDF document text
    • http://www.dogwoodagility.nl/ckfinder/userfiles/files/kotizetidiloget.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c5c639aa5---dosolu.pdfIn PDF document text
    • https://buffinvestment.com/upload/ckfinder/files/77589566535.pdfIn PDF document text
    • http://szentdorottyapatika.hu/files/12719656015.pdfIn PDF document text
    • https://unitjaya.com/contents/files/vabobarubi.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/31832155209.pdfIn PDF document text
    • https://olterus.net/contents/files/sajorozexajakakisilow.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613130e12b588---58891231376.pdfIn PDF document text
    • https://ibextrail.com/editor-images/69070599037.pdfIn PDF document text
    • https://majubesar.com/contents/files/72538204201.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/loa85dgmibv0fqejfe7drhueca/losezumemeso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=ielts+writing+made+easy+book+pdf+free+downloadPDF link annotation
    • https://lapdonline.org/file/58651645058.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72A 18140 bytes
SHA-256: 0ab5ba38a9aa972ada34a540af7f3c8f80e7c084526cbb06a059fa4481b2d05a
font_01_sfnt_off00010689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10689 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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