Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49d4c0df6547956…

MALICIOUS

PDF

77.6 KB Created: 2021-09-05 09:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 00637fea059735dcd73d4b77c6cab1a8 SHA-1: 997c11d254786295b1d54cb1dbffc30dde0a449b SHA-256: e49d4c0df65479561d7f993bebbc4f9d0af69544ba8e1a313221291058274de4
154 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised or disposable hosting sites, likely intended to lure users to phishing or malware distribution pages. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, identifying the document as a non-clustered link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8142

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://champaigncursillo.com/userfiles/file/wipajexu.pdf In PDF document text
    • https://discovercefalu.com/_data/images/file/4052353940.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/5f08e24b823c94f080feb3b169623b5f/32102806086.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/65713330803.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/50999325557.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/kuwajuwubu.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/9a40a2c22be2a166250a92f0c749d2b3/wewixotaxaniwunotigi.pdfIn PDF document text
    • https://hirurgija.me//files/salifijopikorugibuwosiv.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/pepuridasu.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/3b0bb7ced1eba13497b62658ab3334c5/kanefemiboduwu.pdfIn PDF document text
    • http://thessalonikiflights.com/files/files/75207817276.pdfIn PDF document text
    • https://faresaldabbous.com/uploads/files/tigulerotap.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26828a2a27---35618876806.pdfIn PDF document text
    • http://cbcom.eu/ressource/site-image/files/jusofajalefasanijelezidu.pdfIn PDF document text
    • http://xn----7sbabjkhbzbqti4a3apfmdd2s4b.xn--p1ai/ckfinder/userfiles/files/rezabavugukuzefefolabat.pdfIn PDF document text
    • https://vannordenvastgoed.nl/userfiles/file/tadaxabotu.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61730d1fb9---20930170847.pdfIn PDF document text
    • http://hillhouseclassof1961.com/clients/c/c9/c9b049383fb65e98d0a4dcab6c176392/File/sidogukeporijuzozoxejuvap.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/6589fiueakhtmmqo3lhoc88au0/kipoked.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/gafukegugawasidazalo.pdfIn PDF document text
    • https://pezenasenchantee.fr/userfiles/file/xejedatarisujuloxog.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/febuxedof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=distinguish+between+leadership+and+management+pdfPDF 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_off00010b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B1C 11152 bytes
SHA-256: 3e1e0ccb15e6ed7746dc7ba090b1aea12084b4f6304f4b46aa4848659322e73f

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