Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d4361c42be327a…

MALICIOUS

PDF

71.8 KB Created: 2021-07-31 11:09:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e10089be2d5cefab8a7c5556edb21701 SHA-1: 5264204db583d91b2443a2073dea973e7461301f SHA-256: 44d4361c42be327a93e1905e7644599205c0c7cfc283400ad610ead4b9619c1e
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further malware or engage in phishing. The primary attack vector is likely spearphishing attachment, with the PDF exploiting vulnerabilities or social engineering to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9537

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://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ca30a1eca62---woxemi.pdf In PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d6a8713787---kupegirizifolexo.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/e7u2d3vf62ja0frg7d91l6elfr/lijemalib.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/34529ee53a468b9fbace90723897cd07/35835082042.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/a9mr9l30ielio4v01j621ibrp4/vepomobovozuja.pdfIn PDF document text
    • http://kutyasturak.hu/images/files/38030556455.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/68922376328.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/99fde72564c96a30acbaba816a41e75b/tepizigoxuresebimopadola.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca12c21945---98787109102.pdfIn PDF document text
    • http://barnesfamilyre-union.com/clients/52050/File/liweruzotujuvuresumas.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16097467405bb1---587559128.pdfIn PDF document text
    • http://tz5168.com/uploadfile/image/2021/05/28/file/20210528_131855_168.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed5988883c---41469145795.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160977d88bff16---5085680744.pdfIn PDF document text
    • https://lanjutpt1.com/contents//files/xizisamax.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/6hvd3cdu9e37phobqfhrvl67up/22111635381.pdfIn PDF document text
    • http://thedreaminitiative.org/Content/Admin/uploads/files/fixiki.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607638af943cd---wevedadivixogufesimidela.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc1de9cf07---81126199618.pdfIn PDF document text
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/gqj5hmcfcu4mjncm86c48k6nr7/nomunanugipewotemufutazi.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084ccf6d558f---nogiziran.pdfIn PDF document text
    • http://mrmax.ca/clients/9797/File/rilijikojaxiraluda.pdfIn PDF document text
    • https://masterjobintl.com/ckfinder/userfiles/files/32658198891.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/c3foph1osndks3sp0r24h9vfb5/74581878889.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=candy+store+heathers+sheet+music+pdf+freePDF link annotation

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