Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1338e5ced9f9dd3…

MALICIOUS

PDF

54.3 KB Created: 2021-06-06 18:01:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 119c046c49b2f384374ee6592d1f2cdd SHA-1: cad2b45262a8d30f1d29f6212176d5a35fdeac0a SHA-256: d1338e5ced9f9dd338f3882c14ffaaabc767fbe514a3af31db4c29ff5b1ac026
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating it is likely a phishing or malware distribution lure. It contains numerous links pointing to compromised websites, some hosted on disposable domains, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms indicates a pattern of directing users away from the document to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7300

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 https://pistant.ru/uplcv?utm_term=aldol+condensation+and+cannizzaro+reaction+pdf PDF link annotation
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a737df0ced---vedikuzarozowamogipe.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/sp9jn1rcf8tv7h36jsihn9dg34/23441779661.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/2offvsgljh37cva5tosgr2paqv/38907002216.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/f1398k6cv8dt2iatvnqm969rlf/85581762612.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b815af22648---50157200339.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160766d28a170e---zajixujafuputixasuj.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/dv56i30mdseqnd34nmbsfh9tq2/gezitoxijunibezigak.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f74cf58976---rofevof.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074a64639e76---xibowinulinusepowa.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160899f100c5ff---25027245418.pdfIn PDF document text
    • https://alihuata.com/userfiles/file/49789848059.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/36a1c9dba2697eb0e357ad619f5433ac/gidedojobimewosasifogug.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087448500346---67365496520.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f72676f224---19471477639.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/gi85uh07ko1lf9dtl45rm32s4t/27091026629.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/a98a28ca9d2cf98a7d075c36f5af5347/bosifupomexez.pdfIn PDF document text

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