Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0ce2370059379d4…

MALICIOUS

PDF

81.1 KB Created: 2021-09-19 10:09:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1fc2871a565dae2c6001c4a04807f6b7 SHA-1: f8bc643ebf4c13381d56c54b3b435a8968fe26e5 SHA-256: c0ce2370059379d47ebeb8a7daf5ad020b160736183c7093f6cd3e96d0dac5b1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • 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 https://philabc.ru/uplcv?utm_term=print+share+for+android PDF link annotation
    • http://mexxeopaint.com/upload/files/90293203298.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/gerafube.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/43400290048.pdfIn PDF document text
    • http://showpalmedical.com/userfiles/65927021160.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/lonotiruxa.pdfIn PDF document text
    • http://www.southpointinstitutehowrah.com/admin/uploads/file/suxupodeloxuwi.pdfIn PDF document text
    • http://kondicionery-pushkino.ru/upload_picture/file/64168301944.pdfIn PDF document text
    • https://projetounificado.com/uploads/files/sabusuruza.pdfIn PDF document text
    • http://koreanhotpot.com/uploads/files/miguj.pdfIn PDF document text
    • http://kamnitikamini.si/upload/files/xibokugutupilalagageji.pdfIn PDF document text
    • https://contemporaryteas.in/admin/uploads/file/65430693668.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/rorimazegixa.pdfIn PDF document text
    • http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/900835431.pdfIn PDF document text
    • http://elsped.hu/files/file/15646174658.pdfIn PDF document text
    • http://lanaecoloridabruzzo.it/userfiles/file/38304810065.pdfIn PDF document text
    • http://sin-hua.org/userfiles/46672186453.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/77183024169.pdfIn PDF document text
    • https://eminenceconstruction.ca/viking1/uploads/files/waduzitogogoxof.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/jodokotivorovo.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/sudaxojon.pdfIn PDF document text
    • https://hydratrend.com/application/third_party/ckfinder/userfiles/files/75595805455.pdfIn PDF document text
    • https://kientrucqhouse.com/uploads/image/files/gojigajerolidopipejetasam.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3a8701f63---20086192948.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/161467a21b17b9---zopelovizorudax.pdfIn PDF document text
    • 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_off0000d7de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DE 18200 bytes
SHA-256: f26252a365caaed680bc453676f385cef7eb804d7b00db246d1feccbbc1140a2
font_01_sfnt_off0001073c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1073C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F53 10408 bytes
SHA-256: 4f298f69d38e11cf38de2d6480371cdacf5e86d78e2ac89e52692bb5f8d4f52b

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