Malicious PDF — malware analysis report

Static analysis result for SHA-256 0532e6de0465a20f…

MALICIOUS

PDF

64.9 KB Created: 2021-08-20 22:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: a3126e067320bcf4b696876d09391a27 SHA-1: 860e39644f8db69219d1504a43581afda369fd60 SHA-256: 0532e6de0465a20fbcc3fbca0f4ec966e1058f65031527d2fdb5a7bbde5b5347
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting. The presence of external URIs and link farm heuristics suggests the primary goal is to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9143

Heuristics 5

  • 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
  • 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=ncert+12th+chemistry+book+pdf+free+download PDF link annotation
    • http://branonperformance.com/ckfinder/userfiles/files/tewok.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608d953a2922a---buzogawijojokuvaxaxetak.pdfIn PDF document text
    • https://juvelyrikoscentras.lt/Files/file/muguvipibik.pdfIn PDF document text
    • http://aodaiminhhanh.com/app/webroot/uploads/files/56074953720.pdfIn PDF document text
    • https://aspirans.com/files/file/kisuz.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a74f1a49d3c---16103883126.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160fe1f718109e---logonifobivajurasojipejin.pdfIn PDF document text
    • http://willbramephotography.com/pivorofoxofilun.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160986dfc98339---rotubonaxetonunusavapoj.pdfIn PDF document text
    • http://studiomarcheluzzo.it/userfiles/files/piwizazukepafujilimapev.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/jewudelakomu.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/0e87gm9nrig2orqvubkt7mn4tn/vawarakitozasefelivisusum.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/9hg72mak2208435vmsm7ak3m5n/17619798141.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/3a0aaf34172cdcc6fafa751ed1452424/luwikerofexum.pdfIn PDF document text
    • http://autoservizimensi.it/images/fck/file/mururagaj.pdfIn PDF document text
    • https://ourlady-schools2.com/userfiles/files/vimaje.pdfIn PDF document text
    • https://pensiuneavalentina.ro/app/webroot/file/35070318946.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd9ba17ab20---64021315097.pdfIn PDF document text
    • http://www.guus.edu.mn/ckfinder/userfiles/files/74444080745.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/69007927650.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/bojojokesevepoxepoz.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/natevefijezelog.pdfIn PDF document text
    • http://www.serge-valentin.net/ckfinder/userfiles/files/zoxamu.pdfIn PDF document text
    • http://coumert.com/images/file/tekasi.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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