Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3432eab5b7d61a…

MALICIOUS

PDF

87.2 KB Created: 2021-06-28 09:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: d714dd8f9b358773feb7912837b03afe SHA-1: 302d872ba968d6479df8654d338c5ff9a917860d SHA-256: 2d3432eab5b7d61a56440388abdb76038e2bef11abea4680ca71bc1d5aa2ff6d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external URIs and links to what appear to be compromised WordPress upload directories and disposable hosting, suggesting it functions as a link farm to distribute further malicious content or phish users. No scripts were extracted, but the presence of multiple external links indicates a clear intent to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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://philabc.ru/uplcv?utm_term=st+faustina+love+and+mercy PDF link annotation
    • https://avenue102.com/uploads/file/wikadejenet.pdfIn PDF document text
    • http://kistours.hu/userfiles/file/98283296632.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c495a14c55a---90064739039.pdfIn PDF document text
    • http://alpanelektrik.com/depo/sayfaresim/file/42246258890.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/6r6gd8llquarmhe9hvhivse1tl/rojivatijopevinaxenuguzir.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/19390846967.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/35079718968.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/5234a2aff0512bd306d083b1ae92398a/21837180756.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/da4170ecae1c3bfe9266118271ad04dc/dibawe.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/javikimatanaraka.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/8a1cff9bc16e3083b929bf105e08c119/5908362548.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b05922ae75c---17853112461.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/f4d720769b53dd6bdd84da813a1ef9d5/31036513773.pdfIn PDF document text
    • http://tasteofruraleurope.eu/upload/File/58403942769.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/o723im30n68nkkd8bh93kf3jpm/zaguruziwe.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bd6ed1ccfa3---gefuzipijamuzibigukilip.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099fad94f883---rizorodopo.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a315fc02---55527112570.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160acc197e5cb9---3780364174.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/jrba5fbr50l5ci2p1odk03t2go/kewudusotizugivevone.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/1653f5c5b264f2eb618450f4d23d34cd/54452556905.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/81214622234.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160894ff6d0a49---10724297194.pdfIn PDF document text
    • https://anaksemut.com/contents//files/79657445702.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_off0000ed88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED88 17900 bytes
SHA-256: 3482aff1676522d8a3c54effac52d26bec998fd6a8808bff04346e1369fbba68
font_01_sfnt_off00011c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7E 10992 bytes
SHA-256: 8def55a1ae8a7f8bd8cdee55960e7d511402aefd9d135e1ae4654abb29e6b713
font_02_sfnt_off00013605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13605 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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