Malicious PDF — malware analysis report

Static analysis result for SHA-256 76407d517d171042…

MALICIOUS

PDF

55.4 KB Created: 2021-07-21 02:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 40454086d40612fa845155e571011d9f SHA-1: 582de7694e8d3759a78ee37a1bacdfce1fc72d01 SHA-256: 76407d517d1710429d14fa6f13e9126a6d7c830c3db98c73f635aa089e9969b5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics indicate the PDF contains a link farm pointing to compromised WordPress upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

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 http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f354084b0f---bumivuduvilakajibagedened.pdf In PDF document text
    • http://tdvvietnam.vn/webroot/img/files/97347606360.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/7nd25j023ftv917k486koqm4ei/jusutakexoladeluvome.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/5a4008ee8ec713b454fa52b0e35e22f6/zebonabulimuvatatenuvoxa.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/16090ee29f001d---18920094501.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e51164061c---37179133179.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/befutotu.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/e9i6cg559j6fvub5t530f5tvv0/weworameva.pdfIn PDF document text
    • http://minhledtran.com/luutru/files/vaniw.pdfIn PDF document text
    • http://mmt24.ru/files/file/ludepop.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072277577485---56202078326.pdfIn PDF document text
    • http://0930actress.com/files/files/53333333721.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609544366e374---wederevozipivumun.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adeb6bb1551---nuvanono.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16082ff8136e77---worigonefilegawavu.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/2142663429.pdfIn PDF document text
    • http://vendingchat.ru/uploads/ckfinder/files/venujoxibisavibopujewij.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210612131507-gazukemawapif.pdfIn PDF document text
    • http://kgmda.com/upload/files/rufofejisitodibosudilog.pdfIn PDF document text
    • http://sansboundaries.com/clients/f/fd/fde0d4b6b324343791c5f0705b221951/File/lozogebula.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088e647d0203---84747677842.pdfIn PDF document text
    • https://laser123.com/geektic/files/kakesikumasu.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d55b8195ff8---26647847256.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/3afeedb3a2d5d54384287ef78c841261/wipewipozifamugipa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=contract+termination+emailPDF link annotation

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