Malicious PDF — malware analysis report

Static analysis result for SHA-256 60adfb3a9f059fde…

MALICIOUS

PDF

74.2 KB Created: 2021-09-16 03:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: d9c4e8df321ce1c9cfba5afff62aba63 SHA-1: b67eb067860c12ee149cb7379beae083daee6b25 SHA-256: 60adfb3a9f059fde782aa2a5206d8e4731fb91988fdc78c8e1ed8e83ff337f3c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external URLs, indicating it functions as a link farm. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent, likely for phishing or distributing further malware. The ClamAV detection further solidifies this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://queure.ru/uplcv?utm_term=gothic+android+edition PDF link annotation
    • http://shyjjc.com/v15/Upload/file/202196025412101.pdfIn PDF document text
    • https://investincarpathians.eu/app/webroot/media/files/27311177202.pdfIn PDF document text
    • http://hwangtosidae.com/userData/ebizro_board/file/jowosizalidizeweki.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/87494938036.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/3pom1nfqm3lfc8r6osvucvs907/ditame.pdfIn PDF document text
    • http://ubestsports.com/imager/files/20210908045218.pdfIn PDF document text
    • http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/zopov.pdfIn PDF document text
    • http://omatsuri.kr/data/userfiles/files/barimililegerisex.pdfIn PDF document text
    • http://cocoon-source-harmonie.fr/public/file/zesixuvanipigivazegad.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/20113628119.pdfIn PDF document text
    • https://xn--fiqa735be48e.com/upload/files/fenexorofuwamufisit.pdfIn PDF document text
    • http://etyekilovarda.hu/userfiles/file/xugifejuxategoni.pdfIn PDF document text
    • http://www.pacautomarketing.com/file/wimupamipubadu.pdfIn PDF document text
    • http://home-hj.com/up_photo/file/gupoguxubilixireraji.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/mugorumiribumo.pdfIn PDF document text
    • http://donahoelawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/18040620198.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/taxofibupamabuwowutuk.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/33449369922.pdfIn PDF document text
    • http://portalpr-b2b.es/img/user//file/_0168328001631526734.pdfIn PDF document text
    • https://macjiboter.macjahisa.si/files/file/18943621659.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136db90c2db7---17148925250.pdfIn PDF document text
    • https://bonaparte.cappencms.com/templates/files/birawekevep.pdfIn PDF document text
    • https://bedandbreakfastchia.it/userfiles/file/64166766823.pdfIn PDF document text
    • http://simp-q.ru/userfiles/file/visajopurovomasepad.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_off0000c106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC106 16932 bytes
SHA-256: fdda7d820e92e11a954c2009f978aa07b48420821adc60362678e3d9ec7ebd9f
font_01_sfnt_off0000ec07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001041e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1041E 10292 bytes
SHA-256: ae921ab4418d4d58d14c93678ee3ecd49654507c0fa7c303933f42f272e7675b

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