Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c6827837be7f61…

MALICIOUS

PDF

72.0 KB Created: 2021-06-30 13:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6c8f5c61e6145d72dfd5f69fa5c6f7d6 SHA-1: 6bfb432fce3a260d505f93809c62343ab5b85b07 SHA-256: 11c6827837be7f61b0ed55a651bfda495720ff59f4c781bd24ed13e3225ab155
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF file identified by ClamAV as Pdf.Phishing.Trojan. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The PDF's structure and embedded URLs indicate it functions as a lure, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3403

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://allytemp.ru/uplcv?utm_term=list+of+industries+in+west+bengal+pdf PDF link annotation
    • http://aweibel.com/Photo/file/90543733182.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8dfe974266---65753185838.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/kezexovupeturimawijizog.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/4db5c94384688c0108803842401b370c/medevolama.pdfIn PDF document text
    • http://jngf.cn/files/file/65407742380.pdfIn PDF document text
    • http://taskentcompany.com/userfiles/file/84825697217.pdfIn PDF document text
    • https://spacio.hk/attachment/file/58497204279.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805b45ae495---75581739303.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a703c1aaf30---81244482405.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/96009958401.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/1240a98bb95f876f7c3290f0255bdcb8/5666943485.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095009c8e947---20688926996.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bbb8dc24fe4---80643442994.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/4d6ff41d392ef623b2f9d0ee60b9e551/loxorubetupomidetut.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/gagufetu.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e050d2470---13542550086.pdfIn PDF document text
    • http://vipnjl.com/userfiles/files/nalupebufaxijuwi.pdfIn PDF document text
    • https://ferropula.hr/files/67441743699.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3cf740914---xulupixagiwu.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/310279fde548d8397117ae934d51f4b5/81447269680.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160c253762ced9---dutinetegokunakonazin.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/53a39614803b00a96d09fb2c919a70b4/71688970179.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609923d4a04d8---nuwukafiko.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/44897898916.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/30e3d4424f52883fc042619b1c038055/44016212664.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/42752419858.pdfIn PDF document text

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