Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcf6c4e06a8ebe99…

MALICIOUS

PDF

87.4 KB Created: 2021-08-14 02:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2a47c4e12e378bb3ee4fdc742edcef3c SHA-1: 058d9cd89e484bf3795d5041bd0ef947d723d14d SHA-256: bcf6c4e06a8ebe99edd5c3b42028fc98783ddf51889a4b4e4b35a0fa668ed917
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4368

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/2g5l2k9oe0dutl34bi9ndvgrmg/56860631978.pdf In PDF document text
    • http://calhi1977.com/clients/879053/File/jataxugijame.pdfIn PDF document text
    • http://skncn.com/u/files/luwifik.pdfIn PDF document text
    • http://texmet.pl/userimages/file/5687973459.pdfIn PDF document text
    • http://historico.uts.edu.co/portal/app/ckfinder/userfiles/files/nukigabakatixukaxumokape.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/33631552119.pdfIn PDF document text
    • http://vyveva.eu/UserFiles/File/tegezikibewewu.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae40d61af45---38479083864.pdfIn PDF document text
    • http://www.clc-engineering.com/siteuploads/editorimg/file/dokivubobirugape.pdfIn PDF document text
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/9eac76b8eec3d489ed581ce95e033254/86917170285.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/e07533f96e1a4fb976c549db5614a518/24148760573.pdfIn PDF document text
    • https://phuquiland.com/upload/files/buferevimidibiluj.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae6f4c2905---69154298930.pdfIn PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/8ce1cfcb95013c824bbe98b8c873cd9f/mapewenubesasukixevixog.pdfIn PDF document text
    • http://whatdwellswithin.com/file/xatepagejuparajeg.pdfIn PDF document text
    • http://hotelrefah4ter.ir/basefile/hotelrefah4terir/files/rirukorawine.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/05/file/202105250606364569.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/a4fdb092afac46dabf0ef28d5fa35cd2/nekevetudujum.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/564830cd278d3c93d1d8184cc61eab0e/xegunubanoredukomazirite.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984c522f2ea---88671593007.pdfIn PDF document text
    • http://ferramentabelleggia.it/public/file/sujorojulutaxovojugadito.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/barifosevozabibuzexututej.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608abacf01207---vidumukevojajutaresoru.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=ejercicios+sujeto+y+predicado+para+ni%C3%B1osPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001074a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074A 10996 bytes
SHA-256: b86ce4e6b7f90135adb0aea591fc06084496e0cb0fda0e9bf4015d91a4b73bdd
font_01_sfnt_off000120b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120B0 18752 bytes
SHA-256: 5987fae15a343d3178b7806dececb6657b640183f02eccc7443ea98064415f8b

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