Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1eed263e1cd0dbc…

MALICIOUS

PDF

85.9 KB Created: 2021-08-13 09:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: f852d95fff15e8b2967909f367f5be4f SHA-1: a08215aaf005227c287e5a5bbba90779a499ba41 SHA-256: f1eed263e1cd0dbcebf49a93a92a0a0fc79dcfcdb61b6d2b201354301d159c04
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or exploit kits. No scripts were extracted, but the structure and URL findings are sufficient to classify it as a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9780

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://amako-ra.com/wp-content/plugins/super-forms/uploads/php/files/ac952208b8cd23d00a8bc5c477f60ec1/zerufal.pdf In PDF document text
    • https://kuraniterbiye.com/resimler/files/nazutetevutot.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/36448799078.pdfIn PDF document text
    • http://www.salpasafarit.fi/tiedostot/files/11984517616.pdfIn PDF document text
    • http://goldenbaycruisesagent.com/userfiles/file/birinikoros.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1a53ebfe5ff5532ea476cf022a212887/5369874094.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dfc1006610---nigiguxiwi.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096599a68c49---93029444035.pdfIn PDF document text
    • https://metal-et-verre.ch/ckfinder/userfiles/files/79941675032.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/lrflnbce7kn2rgpcsg2c2j3gmj/farimufa.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/2562878e0b603692d9fb6bb043224a6f/86303615965.pdfIn PDF document text
    • http://xn--e42bt3l.net/upfile/files/dowiletozabajexogozulobe.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/73384009567.pdfIn PDF document text
    • http://digilit.ir/basefile/digilitir/files/41866640651.pdfIn PDF document text
    • http://dermalab.pl/userfiles/file/jivowadagi.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/161079041624fc---78336710094.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/8e17081e962fff482fcfaeebdb4a906e/6860910305.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820d07ad2d2---dubanodosiweju.pdfIn PDF document text
    • http://yilip.net/userData/board/file/bororafifadovijirekinoba.pdfIn PDF document text
    • https://notrepanierbio.ch/userfiles/file/mabewokesiraguxoja.pdfIn PDF document text
    • https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/5941de751414691bdc8790f879697979/boxeba.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/8690a846e2d93950e34e19a8fe64e364/82234997252.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=shklovsky+defamiliarization+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_off00011906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11906 11168 bytes
SHA-256: f3a1d73516424a1fee5e3036eb4e271ae01527c12ecb5a4447b7418bf2d6b47d

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