Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d50b1993515e95…

MALICIOUS

PDF

60.7 KB Created: 2021-09-12 17:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 8e01c0ce506fa1870ce6d8f19f952681 SHA-1: 164b44eca01d2d6e5e480aec1e97bc922cc36c49 SHA-256: 40d50b1993515e95234cac2ee69ae13bbda5cfea5c3aef3401c183a15c7ab8b7
154 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8787

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://wwsm-us.com/files/file/4654473686.pdf In PDF document text
    • https://self-storage.sg/images/uploadedimages/file/41411695465.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/e5a16768fdeb3838a2c18f11f8ba1308/pifowafa.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/22447864445.pdfIn PDF document text
    • http://alpha-cp.com/userfiles/file/24899064957.pdfIn PDF document text
    • https://www.sesc-am.com.br/Selecao/ckfinder/files/xetizudokewezemezoluz.pdfIn PDF document text
    • http://all-paca.com/ckeditor/ckfinder/core/connector/php/uploads/files/77009860634.pdfIn PDF document text
    • http://hotel-ambassador-nice.com/upload/files/gejanowulufewilajonu.pdfIn PDF document text
    • http://csa.china-led.net/static/editor/ckeditor/ckfinder/upfile/files/73570436305.pdfIn PDF document text
    • https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/famugukoderesojajelunopif.pdfIn PDF document text
    • https://brothers-music.com/ckfinder/userfiles/files/79036221896.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/31401243166.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161394d3a86e14---zapunolunuvosafesidibifaw.pdfIn PDF document text
    • https://infrastone.com/userfiles/files/bemaxugasapujufotad.pdfIn PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/waxukofep.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613daced93134---wuxexedowupobomegi.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/bbe7e9a327fa4063041c9d835abfff6c/964389070.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/9996635041.pdfIn PDF document text
    • http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/6250621017.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/33345181309.pdfIn PDF document text
    • http://bwemfjhjk.friend-match.com/upload/files/48563315557.pdfIn PDF document text
    • http://analhospital.net/file/files/41539367866.pdfIn PDF document text
    • http://wedding-box100.com/uploads/files/202109102100529481.pdfIn PDF document text
    • http://tnslib.su/userfiles/files/gaxozezamujusat.pdfIn PDF document text
    • https://f27szerviz.hu/upload/files/vurara.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=faug+in+app+storePDF link annotation

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