Malicious PDF — malware analysis report

Static analysis result for SHA-256 93037eccdb0f761d…

MALICIOUS

PDF

69.8 KB Created: 2021-10-03 04:51:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 46341ae5ae4c412555e5bfee7776f7ed SHA-1: ca44a1047cee2242910606834ae6cc4da7409015 SHA-256: 93037eccdb0f761db84aed952dd34d37fd28673c83bf5ac5193557d90039d51a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. Numerous embedded URLs were found, with many pointing to suspicious or unknown domains, suggesting a link farm designed to redirect users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a large number of links on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f2dbfe6662---487520203.pdf In PDF document text
    • http://julianina.dk/upload/file/8658533622.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/78435130135.pdfIn PDF document text
    • http://flapboxes.custompackageboxes.com/userfiles/files/xinosesaxexutami.pdfIn PDF document text
    • http://potlista.com/file/files/temixamukizirizobaloge.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/47692478837.pdfIn PDF document text
    • http://rilta.net/userfiles/files/23015416974.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20211001233348.pdfIn PDF document text
    • https://movimientofamiliadejesus.com/images/uploaded/file/kawavuxisi.pdfIn PDF document text
    • http://qigong.ru/userfiles/file/99276305268.pdfIn PDF document text
    • https://vietucmould.com/img-vietuc/files/70841701719.pdfIn PDF document text
    • https://lixtech.com.tw/ckfinder/ckfiles/files/jilusetabumolu.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b38ced5587---60280002255.pdfIn PDF document text
    • https://euro-m.si/web/dokumenti/file/29642472646.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/tobubijejoresuxeluleva.pdfIn PDF document text
    • http://zangerlelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75867410820.pdfIn PDF document text
    • http://epwuae.com/userfiles/file/15634146831.pdfIn PDF document text
    • https://eastmangroup.org/ckfinder/userfiles/files/sifodivebigobup.pdfIn PDF document text
    • http://kkslavicin.cz/sites/default/files/file/zopazogolu.pdfIn PDF document text
    • http://turnyras.lt/Files/file/pedaxilurigowulo.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/kumejasatovodu.pdfIn PDF document text
    • http://restauraceeverest.cz/userfiles/file/takesabamul.pdfIn PDF document text
    • http://topaslt.com/userfiles/file/18205578162.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=db2+convert+char+to+numeric+examplePDF 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_off0000b177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB177 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c98e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC98E 11000 bytes
SHA-256: 6f825aa40807fde1d60167b12acf01356bf48a545b76872067680e966aece455
font_02_sfnt_off0000e2c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 15244 bytes
SHA-256: 1857cc5e1c1ef5d2ada753846b0ca9839f41fee3e8152993870659033b8361aa

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