Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bd4d8320416f352…

MALICIOUS

PDF

62.3 KB Created: 2021-07-25 19:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 9f74fc94279df36b5080e2e2f6e5592c SHA-1: c4840b2da1a68eed3362d4c55ead6dd40acd8ef7 SHA-256: 8bd4d8320416f3527f5a15facbe33e6326b2b834f7eb16c743a1b9edf37f8e52
154 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to direct users to potentially harmful sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9286

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://uticachemical.com/files/upload/files/mebazafivilupabofowow.pdf In PDF document text
    • http://menloathertonhigh1980.com/clients/6/6f/6f83464fe0b13873896cace574d4baa5/File/32168170322.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/53867441988.pdfIn PDF document text
    • https://alnahamgroup.com/userfiles/file/zonatuxixaridisubiranumoz.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/i32eoe3pbpcv51l999seb7u4h5/25243233499.pdfIn PDF document text
    • https://cordovajewelry.com/images/file/kuloperotakuwepu.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/d6b1925584be6d97c9d6ac6f243715e4/60672994718.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160949f02da289---mekumixutijisuja.pdfIn PDF document text
    • http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/papabapapaninate.pdfIn PDF document text
    • http://cp-1.ru/userfiles/files/sixixegipixodubeve.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/e3c45158ea2c4ad26cf176778ef9a027/24617422381.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/81114328412.pdfIn PDF document text
    • https://aspirans.com/files/file/99123717868.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d231f09589b---42350089604.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607fae2f08a6d---28791216217.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/75014998450.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f29633f8a5---lajekof.pdfIn PDF document text
    • http://sun-eko.eu/files/file/jumufaxokirasis.pdfIn PDF document text
    • http://www.pilonidalsinus.gen.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae6db428cf---52028333025.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/521a7e98c4b32b90c14ba6f7087288e9/61433728643.pdfIn PDF document text
    • http://davidhammerstein.org/userfiles/file/243726372.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606c6bd5056b7---lexoguzomelotamir.pdfIn PDF document text
    • http://rideco.hu/upload/file/pirewanolodat.pdfIn PDF document text
    • http://kudusde.org/resimler/files/gatilanulowewa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+make+dunkin+donuts+iced+mocha+coffee+at+homePDF link annotation

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