Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfd10dea7da9f2bb…

MALICIOUS

PDF

74.8 KB Created: 2021-10-15 00:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: c1f01d8cdeb231bca50ad670888d73ca SHA-1: c12e92fd652be235fea08fd7f07dd7878f19edca SHA-256: bfd10dea7da9f2bbddb0aa026b1c2915a22e804ab536de56f26980661b0952aa
144 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress sites, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this. Although no scripts were directly extracted, the nature of the links suggests an intent to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3105

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/161479790a3406---64871586698.pdf PDF link annotation
    • http://redeyeldn.com/userfiles/file/tesakidiwadijawini.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/babubotugobimadosuroni.pdfIn PDF document text
    • http://beverly.kopanramen.com/uploads/files/74636939450.pdfIn PDF document text
    • https://mokshadhamnepal.org/userfiles/files/wetovef.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6f3d18868---funuru.pdfIn PDF document text
    • http://teamhead.net/userfiles/file/ludulezupeb.pdfIn PDF document text
    • https://hsdinstruments.nl/uploads/files/gabegawipazobafuv.pdfIn PDF document text
    • https://bhiringisamsankalimandir.org/userfiles/file/fakotapupezizevoboti.pdfIn PDF document text
    • http://xinghui.co/upload/ckimg/files/202109302247266477.pdfIn PDF document text
    • http://trevelsi.ru/ckfinder/userfiles/files/lowifezebuloduxa.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/78694934869.pdfIn PDF document text
    • https://find-domain.lazy-online-shop.com/app/webroot/userfiles/files/38045612847.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/gazikowobanado.pdfIn PDF document text
    • http://sendedianqi.com/upload_fck/file/2021-10-7/20211007010106805774.pdfIn PDF document text
    • http://centroolosprato.it/userfiles/files/88053840011.pdfIn PDF document text
    • http://www.tramag.pl/upload/file/23916248999.pdfIn PDF document text
    • http://www.srijonihealinghome.com/fckimages/file/xipixol.pdfIn PDF document text
    • https://tekartltd.com/upload/files/31780028565.pdfIn PDF document text
    • https://sitpchemcieszyn.pl/_sitpchem/file/nonufewep.pdfIn PDF document text
    • https://maymac.info/userfiles/file/50102052620.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/7a4f904124134439d513f0943afb2ad5/35827772272.pdfIn PDF document text
    • http://agecarekorea.com/ckupload/files/maxufokajegol.pdfIn PDF document text
    • http://itcck.org/upload/editor/file/fugodeviramiture.pdfIn PDF document text
    • http://www.radeton-cz.vasestranky.cz/ckfinder/userfiles/files/zovukokoninoxizubunare.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615a70138e8f3---85830384858.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/EqozwcbAC44/uplcv?utm_term=self+depend+thoughtPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE9 10432 bytes
SHA-256: bbc7b9eabfdbbdb00da7316604c42d31474fb2e7bbe7d7f18daa5b5618295d87
font_01_sfnt_off0000f649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF649 20720 bytes
SHA-256: a923eebe3a82a50a357ab75dcb3a956c24dc6e335e6ea342cd81c83a7e5bd27e