Malicious PDF — malware analysis report

Static analysis result for SHA-256 5111736dd88d20ad…

MALICIOUS

PDF

62.0 KB Created: 2021-09-15 13:47:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e9cf2b332c2ba868e17b225693cf9e9f SHA-1: 4c5134b945d00afccf05ac0d67127116a4ddad3e SHA-256: 5111736dd88d20ad5b04e1aa74a5a1c1896e7f448b70a7072660d9c85b857a47
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document contains a link farm pointing to multiple domains, many of which are hosted on compromised CMS uploads or disposable hosting, suggesting an attempt to distribute malware or phish for credentials. The primary goal appears to be directing users to download files from these suspicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8187

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://abwingsde.com/uploads/files/49967193732.pdf In PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/satefudevugegaxanigovod.pdfIn PDF document text
    • http://fc-junajted.com/upload/datoteke/71608514636.pdfIn PDF document text
    • http://leeclinic.kr/userData/board/file/75453369632.pdfIn PDF document text
    • http://sinostandards.net/upload/files/67990253378.pdfIn PDF document text
    • http://52fotki.ru/ckfinder/userfiles/files/palipumemejemosarik.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/161401b248e653---kemawexo.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b812171f42---rituworinip.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/nulox.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/e8aqmsj6is4n27c9rahseg99te/51971738680.pdfIn PDF document text
    • https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/32215638176.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/9894ea3f5f01817c55cc78b761927b47/lixonakezewagunatawuf.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc7d2696e3---sukesanulumize.pdfIn PDF document text
    • https://stealthwindow.tw/uploads/files/202109080247058293.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/55544861617.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/41248354427.pdfIn PDF document text
    • http://clarklawtexas.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17854158101.pdfIn PDF document text
    • http://klccpa.com/userfiles/file/41281705274.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/mumorik.pdfIn PDF document text
    • https://szpital-sulecin.pl/images/fckfiles/file/fatijop.pdfIn PDF document text
    • https://12tiga.com/contents/files/labuz.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/53491708283.pdfIn PDF document text
    • https://mrpressconsulting.com/UserFiles/file/rubarapulaw.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/6223445750.pdfIn PDF document text
    • http://fkm-lux.by/var/upload/file/funonavupiramarogutonax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=minecraft+five+nights+at+freddy%27s+mod+downloadPDF 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_off0000db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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