Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14f5d9bafc50a3a…

MALICIOUS

PDF

165.2 KB Created: 2021-07-23 08:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 04ef398a8adcbd7d8676ffd2d55edaa4 SHA-1: e6ab6cb6cde17ae48ff42d4373bf5defa88c4e53 SHA-256: c14f5d9bafc50a3a5025a3f69239a8b3b03b441fb7de1c15758e1b18bf7cb1fa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to numerous compromised WordPress sites and other potentially malicious domains. While no scripts were explicitly extracted, the PDF structure and the nature of the URLs suggest it is designed to lead users to phishing or malware download pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9806

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://annandale1963.com/clients/69704/File/rarevik.pdf In PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b21d165cdfa---58381898037.pdfIn PDF document text
    • https://jetaime-shop.com/files/sumejax.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/6ca7388b7a5c44f15388e9f0065e4942/wutipafifuwipuzow.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/mvrmah3hvc17do11ternf9demp/55604782587.pdfIn PDF document text
    • http://auburn-properties.com/userfiles/files/48240768835.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nafudonature.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1608a274819b4c---zofifadenasose.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/i2kh7rbg76a361lefdbnt32rv9/38219370113.pdfIn PDF document text
    • http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/vopavobuxox.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/zumeka.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/banetaxogu.pdfIn PDF document text
    • https://247hvac.ca/fabulous1/uploads/files/70310551938.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/531a97f0ebec2a7341d0b99da5e6a9db/5761311776.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cdbed93515b---21913308942.pdfIn PDF document text
    • http://geteffective.biz/uploadfiles/file/85405993012.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/99640010518.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f87300a2e5f---80876353550.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080fed58989c---rufoxes.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/jopimoxolu.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/99846442157.pdfIn PDF document text
    • http://facyt.com.ar/ckfinder/userfiles/files/jozemafelonimaguwur.pdfIn PDF document text
    • https://virtualpulse.eu/UserFiles/file/43806277588.pdfIn PDF document text
    • https://fotovipvercelli.it/file/87357706284.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e5b3ed0718d---97923360847.pdfIn PDF document text
    • http://hhs63.org/clients/8/88/88ec95b665b56da82b1de85f097fba10/File/95226226999.pdfIn PDF document text
    • http://mpti.ru/userfiles/file/39525612625.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=microsquirt+installation+manualPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22094 10496 bytes
SHA-256: 6ba557c8ac03ac531b36f222efd0184cbb22b67a052df7ca6372cb8406907d75
font_01_sfnt_off00023870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23870 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00025082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25082 19536 bytes
SHA-256: f3791973e9370d76188d7e1522356e4d9cbe3e607f173a6f6a3e1f2ceb5064ed

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