Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe17182b7467564…

MALICIOUS

PDF

43.6 KB Created: 2021-07-14 09:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 184e0c00f858fc24319be7122096acd8 SHA-1: adc1b1f79e8f5bab1e6f43cc2bde430e961fb891 SHA-256: 4fe17182b7467564c2ba6f0fd549829974db34f466be09ce8470f3f09dec7750
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as malicious by ClamAV and ML classifiers, exhibiting characteristics of a phishing lure. It contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content or phishing pages. The heuristic 'PDF_IMAGE_LURE' indicates the document likely uses a screenshot to obscure a clickable action, further supporting a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5805

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 43 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://crysiq.ru/uplcv?utm_term=the+story+of+an+hour+quiz+answers PDF link annotation
    • http://ctkupavna.ru/upload/file/65969702389.pdfIn PDF document text
    • https://www.proctoloji.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9405a606a---22191712546.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160df66073cf9a---95497550685.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855f2855915---pijukoxetewibegedu.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160afd0e7cf97c---pedowagesumijikekevoz.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/e030fe1596da4246f5ebb7fc65c0225d/56735528589.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0173af9a8---81626274871.pdfIn PDF document text
    • http://klefmarken.se/upload/file/vifato.pdfIn PDF document text
    • https://wrd13.com/force/file/wafaguzagoposolidederodin.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160acbf5daf4b5---xodigojegaxivimonodes.pdfIn PDF document text
    • https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/bbdbcaf7b9c6d260a0a8c691fd1838af/jagovefikefefadekezipim.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210615175736.pdfIn PDF document text
    • http://www.toptehnik.si/images/89810165254.pdfIn PDF document text
    • http://austintownfitch1980.com/clients/879833/File/pizetagunakalipalawudofo.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/edc9c470f1ef25687e89da90d10bee43/fijuresiwedi.pdfIn PDF document text
    • https://jdbailbonds.com/wp-content/plugins/super-forms/uploads/php/files/3856af84b1919d8a59dbc04f254bdee5/49726693804.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9135ee58c---935866721.pdfIn PDF document text
    • http://ukicda.com/admin/fckeditor_upfiles/file/2021062102480980554.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088797eda2f2---63582106084.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/ua99c44hcm6epkdes01ib3lbu0/77411789871.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/d1a2f429923d1cfbea3d32ca178fcca2/49303825415.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/49qha2get1f9tv6lil3i75if83/bopizigasiwonumatororub.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608029f322f0e---7770009764.pdfIn PDF document text
    • http://sns.hu/_user/file/3148038340.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/c30d0bebc3ccf5dd8d50756775332e3a/77758832379.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/92868180861.pdfIn PDF document text