Malicious PDF — malware analysis report

Static analysis result for SHA-256 510f20f4704ab45b…

MALICIOUS

PDF

67.8 KB Created: 2021-09-03 23:18:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: f24d92a6f9bb87200205ef00c4893bce SHA-1: 5d9733f685317f63c8f343c139f9231bdbf76451 SHA-256: 510f20f4704ab45bdb246f3b429b64b438231a189d949f343c667f9c82be68c4
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan payload. It contains embedded JavaScript and numerous external URIs, many pointing to compromised CMS upload directories or disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of embedded JavaScript indicates it likely attempts to execute further malicious actions or download additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://coretry.ru/uplcv?utm_term=2018+publication+15+circular+e+pdf PDF link annotation
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0cfdac0cbf---5992330500.pdfIn PDF document text
    • http://benthanhsgfarm.com/images/uploads/files/rutujonelo.pdfIn PDF document text
    • https://studiorampinelli.com/file/89204762280.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c62e67c523c---68350780967.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/l629vm2vterabe9j3t0mcaee3k/37566747409.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c503b180572---xazuzudutuwebifurejajadap.pdfIn PDF document text
    • https://diphong.com/uploads/toroketunozeputexoza.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609adf8400a13---3222349476.pdfIn PDF document text
    • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/tukuzotudulatem.pdfIn PDF document text
    • https://alajuusa.ee/media/contents/file/26191635960.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/5156761259.pdfIn PDF document text
    • http://amindoost.ir/images/upload/files/xemimatezonowidudin.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/butedizitigadokibuz.pdfIn PDF document text
    • https://cpc-serbia.org/js//files/57487807697.pdfIn PDF document text
    • http://cmtdental.com/upload/ckimg/files/5056407379.pdfIn PDF document text
    • http://phpirateboosters.com/clients/867602/File/93668753583.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160763893d86e9---seditarejamifudir.pdfIn PDF document text
    • https://ijacr.net/assets_admin/ckfinder/core/connector/php/uploads/files/tuwatebiwumegoxidaporot.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160868edd8cd8a---majokatukikiwabepu.pdfIn PDF document text
    • http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/53038698048.pdfIn PDF document text
    • https://mzr-avocats.com/buddha/ckfinder/userfiles/files/nagawikazakarazov.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b36ea473bf---87912087341.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.