Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6defb0678351914…

MALICIOUS

PDF

78.4 KB Created: 2021-07-31 18:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 70e4f54f496d1919d2015ed6a4654780 SHA-1: 340a469fc41aa276f63676fd700eb0a6aa570a1b SHA-256: f6defb0678351914022277a32ca75fd7c7e77dd4afc7235a4ffa2f0050acdbed
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains a link farm pointing to multiple websites, many of which are hosted on compromised WordPress installations. These links are likely intended to lead users to phishing pages or download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2749

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16089698c535e6---lusepafajuken.pdf In PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743f3fc3837---36855003537.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/jf7v3gvin3ghnd40g6p88bqjln/wewajumutepaze.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071ded863ee7---486808570.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/dd853fa57b77234f332a098eb64bb767/mimakaborejun.pdfIn PDF document text
    • http://sys-svinding.dk/userfiles/file/govikadujajajoluwim.pdfIn PDF document text
    • http://allseasonsart.com/uploads/fck_uploads/file/jeked.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3defef2b06---22199788814.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/susazero.pdfIn PDF document text
    • http://yangs-ns.com/ckfinder/userfiles/files/20210627052103.pdfIn PDF document text
    • http://dalaichau.com/files/jokiribufalivaziw.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/77381065689.pdfIn PDF document text
    • http://maility.pl/_ADRESuserfiles/file/68899049142.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/35425794780.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16093cee2361a9---77349740908.pdfIn PDF document text
    • https://zohopin.com/calisma2/files/uploads/jexovuxelaxusujuzevulafas.pdfIn PDF document text
    • https://abe-rdc.com/userfiles/file/2426440558.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1608e77c51a2e6---83359279473.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c55d0cab7fc---daxuvano.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607835d6cd4d0---64103992082.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a69179abd---43783453464.pdfIn PDF document text
    • https://eldorado777.ro/upload/editor/file/sunurobipikekasupefumirud.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/68125743558.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/02bad342c6c925cdae79418c025cccf2/kisetuwimolosonukuxi.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents//files/nulavodufemozusexowojeve.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/8e347e80043aabaa0e01ef8bbec393e3/kezaxeboguxi.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/lovawo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=the+percy+jackson+and+the+olympians+titan%27s+curse+the+graphic+novel+read+onlinePDF link annotation
    • 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_off0000de05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE05 17236 bytes
SHA-256: 5d26650ad90acc6d67594d77aebdc290b5ce77c3aadf4814dd80e58c825ae9ca
font_01_sfnt_off00010add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADD 11460 bytes
SHA-256: eb2549ffcc6b51fcfeb6b9cfcdf2e8c29ea3ec70566b618fc92dd71bed94e782
font_02_sfnt_off000125a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1