Malicious PDF — malware analysis report

Static analysis result for SHA-256 293aa7faa21bfeff…

MALICIOUS

PDF

62.3 KB Created: 2021-09-14 04:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 2186f111890072a813036a90d782acbf SHA-1: f22a3acd51ce4448d36512d5d9a9aa9f5ce7b733 SHA-256: 293aa7faa21bfeff38b00f110407ef2d55ae4286b25f100a266b811b374ce61e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host and distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection to these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7898

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://turismopontevedra.com/ckfinder/userfiles/files/sibaj.pdf In PDF document text
    • http://plovdivweek.com/app/templates/js/ckfinder/userfiles/files/zewimutowewuz.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/78216168040.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3ec39dfe8---fedixonet.pdfIn PDF document text
    • http://retrolondontees.com/userfiles/file/4693632102.pdfIn PDF document text
    • https://china-glass-mosaic.com/userfiles/files/20210909_223627.pdfIn PDF document text
    • https://rais.bg/uploads/file/89219042031.pdfIn PDF document text
    • https://gagiongvitgiong.com/ckfinder/userfiles/files/xorulabomolepupusude.pdfIn PDF document text
    • https://angelsolutions.ro/ckeditor/ckfinder/userfiles/files/22649891236.pdfIn PDF document text
    • https://jlgardner.org/home/jlg/public_html/ckfinder/userfiles/files/9721709021.pdfIn PDF document text
    • https://oncallanatomist.com/ckfinder/userfiles/files/906999382.pdfIn PDF document text
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612ff4c9b97a7---36399543792.pdfIn PDF document text
    • http://soepcentrale-dekeyser.be/userfiles/file/76809085121.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/29390725956.pdfIn PDF document text
    • https://loyalangkorapartment.com/userfiles/file/wozotutisinevasugi.pdfIn PDF document text
    • https://aramlasmerok.hu/uploads/file/gijivemid.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/alcs6cpr5vdlvk9r6nk7qfto4b/36849280778.pdfIn PDF document text
    • http://indago-rovigo.it/userfiles/files/mopodidugo.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/f62f20ed08fbea2c28df680bd552523d/35384317261.pdfIn PDF document text
    • https://thinkglobalcompliance.com/ckfinder/userfiles/files/48117278647.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/79740513886.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/nidodi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=avengers+infinity+war+movie+full+moviePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2D 17516 bytes
SHA-256: 6dc35ab38145638063c568ed708667a0d0825070179b27322b43d57a833899f2

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