Malicious PDF — malware analysis report

Static analysis result for SHA-256 670506d4ca1f1786…

MALICIOUS

PDF

81.5 KB Created: 2021-09-09 05:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d7f30c6532eceade4e1941b4ddd8a7ff SHA-1: 60905d325da3e7f53505d3264f872d67dd50a242 SHA-256: 670506d4ca1f1786cd328a9a549b6f835ef1601e583acb4c418564c7bef062b1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to potentially disposable domains, suggesting a link farm designed to redirect users. The presence of embedded JavaScript, though obfuscated, indicates an attempt to execute malicious code within the user's browser.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 http://bluebirdcanada.com/FileData/ckfinder/files/20210905_CC82B6525D09A270.pdf In PDF document text
    • http://ssatripoli.org/userfiles/file/rujobo.pdfIn PDF document text
    • https://arizonapoolcontractor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132c91f90e08---67167067885.pdfIn PDF document text
    • http://www.logistiekverbeteren.nl/ckfinder/userfiles/files/21730802083.pdfIn PDF document text
    • https://akconta.com/uploads/files/bojoraxutakumaxep.pdfIn PDF document text
    • https://www.carnesvarejo.com.br/assets/ckfinder/core/connector/php/uploads/files/44923239421.pdfIn PDF document text
    • http://elpijisystem.com/file/19945005934.pdfIn PDF document text
    • http://etabetasurvey.com/userfiles/files/80833364494.pdfIn PDF document text
    • http://universalgroupautos.com/files/others/jetezuwa.pdfIn PDF document text
    • http://thietbiotovn.com/Images_upload/files/ziwuloruranawagijotu.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/58941663397.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb32c60f3b---81796220218.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/4987552102.pdfIn PDF document text
    • http://aven.su/userfiles/file/xixapugumupapipewusoxani.pdfIn PDF document text
    • http://monkey-do.net/userfiles/file/wekupomuberenuzonexubi.pdfIn PDF document text
    • https://economiadecomunion.com/ckfinder/userfiles/files/zivefegulegisobaji.pdfIn PDF document text
    • http://cgpharma.in/cote_dor_import/admin/ckfinder/userfiles/files/3196422007.pdfIn PDF document text
    • http://clevio.biz/fckUpload/file/kubakopomi.pdfIn PDF document text
    • http://www.cottagegrad.ru/files/file/22433415441.pdfIn PDF document text
    • http://salonorganica.ru/upload/files/neganulizu.pdfIn PDF document text
    • https://loyallcanada.net/editor_files/file/fukiditup.pdfIn PDF document text
    • http://nuk-amro.de/userfiles/file/nofimaliwajikogi.pdfIn PDF document text
    • http://resurrection-life.net/userfiles/files/finuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=object+eraser+app+for+androidPDF 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_off0000dade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADE 10860 bytes
SHA-256: 7d87bb0d34015029903922cbb6208e82ffb85b6d922d2b3a283ba42cf826a5f6
font_01_sfnt_off0000f3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEF 17348 bytes
SHA-256: 90ec886fe4cc224450527d89863002c8c9ec07bdd60f4b79323ad08e54bbb5df

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