Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf664013c03d725…

MALICIOUS

PDF

77.3 KB Created: 2021-09-10 14:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 638390962cae9d2cfdb9f9f1db7b703b SHA-1: ade6492e41dff6e0c979539ad73c54b7be0b1a15 SHA-256: bbf664013c03d725e8e579be6cc28342de4d044652e5fce8ebc99b45c73073bc
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://servauto.fr/img/user/file/tunomugejizigejuwe.pdf In PDF document text
    • http://insureavisitor.com/userfiles/file/webojorosuramoros.pdfIn PDF document text
    • http://parkety-patemal.sk/files/file/wapadozumovu.pdfIn PDF document text
    • https://needletherapy.eu/upload/file/puxadababo.pdfIn PDF document text
    • http://yeosingol.com/FileData/ckfinder/files/20210910_D863A60F59B56031.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/jawanokufukuxikum.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/39260338437.pdfIn PDF document text
    • http://hakasasi.id/userfiles/file/94631679619.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/mogunigine.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/gulasigopabepa.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/31508396803.pdfIn PDF document text
    • https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/gimugelojezowezam.pdfIn PDF document text
    • http://avandcie-energy.fr/ckfinder/userfiles/files/vanigoliwavorezanove.pdfIn PDF document text
    • http://etenindex.nl/images/uploads/zaguniv.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/86029992231.pdfIn PDF document text
    • http://chanhungcorp.com/images/uploads/files/sugewotuwutom.pdfIn PDF document text
    • https://pastelbuilders.com/userfiles/file/34963726727.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/60656838773.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/rorowuwusofakenewamisoro.pdfIn PDF document text
    • https://www.la-melodie-des-saveurs.fr/ckfinder/userfiles/files/8954878381.pdfIn PDF document text
    • https://everywheregenes.com/uploadfile/qu26_qu106_com/files/93838650423.pdfIn PDF document text
    • http://woodlandhills.ilovepokebar.com/uploads/files/67047294820.pdfIn PDF document text
    • https://nazragame.com/calisma2/files/uploads/26828233667.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/5bb9af404b2f12a77bb7ed34a7e4eb24/sekomojavepipuvufujogox.pdfIn PDF document text
    • http://bjyhyy.cn/filespath/files/20210903074749.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=lady+snake+eyesPDF 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_off0000ccbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e4d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D2 9948 bytes
SHA-256: 9f2801d70ba1ecf60a7e0c52494957023339dbe29507b08960d1bfd1a7e05805
font_02_sfnt_off0000fae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE7 17368 bytes
SHA-256: 3ea9672a840bef91a71feb6a7e343a5beab4fe562d167f8c1b16b0badad30411

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