Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc597b4e1380498…

MALICIOUS

PDF

69.7 KB Created: 2021-09-27 18:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 71fab92702687509946112478df36007 SHA-1: 5993cb693b54d8ec300c3085ea387827eca70f7d SHA-256: 9cc597b4e138049829d8908890f8742500d544479c522e5080c4eec38e002d60
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for delivering malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing. The embedded JavaScript is expected to redirect the user to one of the numerous external URLs found in the document, which are likely part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://scarpatti.com/files/301018032.pdf In PDF document text
    • http://randoquad72.fr/userfiles/file/35225815351.pdfIn PDF document text
    • https://portalbime.com/UploadedFiles/New/file/piluxitipisanome.pdfIn PDF document text
    • http://tg-focus.ru/userfiles/files/57866276849.pdfIn PDF document text
    • https://dongytueduc.com/wp-content/plugins/super-forms/uploads/php/files/cp1v62u7n0gs7qrq1opjvh8mah/kiromexesixarajijusujut.pdfIn PDF document text
    • https://kanalprofi.at/UserFiles/file/10744640681.pdfIn PDF document text
    • http://mywayrtk.org/userfiles/file/23145614612.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/35406849295.pdfIn PDF document text
    • http://dalieuht.com/app/webroot/uploads/files/12221851723.pdfIn PDF document text
    • https://mimpishio1bet.net/contents/files/39364402643.pdfIn PDF document text
    • http://thewhitmerlawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/44409355313.pdfIn PDF document text
    • http://studiomanzetti.it/userfiles/files/20820463399.pdfIn PDF document text
    • https://guenangequitation.fr/www/site/js/ckfinder/userfiles/files/81140561852.pdfIn PDF document text
    • http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/2724648537.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/34635079992.pdfIn PDF document text
    • http://addisonplaza.abwingsmd.com/uploads/files/12715947075.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/mipusokaridogunepajabeg.pdfIn PDF document text
    • http://abnigakgdsg.friendship-match.com/upload/files/77136593946.pdfIn PDF document text
    • https://abzesolar.com/uploads/files/geberadijupinujaw.pdfIn PDF document text
    • http://ferrocom-spb.ru/userfiles/files/87733412789.pdfIn PDF document text
    • http://snsi.jp/image/news_file/32963237500.pdfIn PDF document text
    • http://www.bash.cl/media/file/sazuzopexus.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/82032771905.pdfIn PDF document text
    • https://hilanguage-com-tw.triangle-design.com/files/80654831913.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+to+delete+history+in+chrome+mobilePDF 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_off0000af2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF2A 10804 bytes
SHA-256: 90069dc459f21ef021e1c506a1783ef2b82e049672af80242a0ec0b963b36d48
font_01_sfnt_off0000c7e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E1 16108 bytes
SHA-256: 28d7ccbf77ea98bdf17486257c19ebbd863e3ddef2725ad362e0053ae8a25a4d
font_02_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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