Malicious PDF — malware analysis report

Static analysis result for SHA-256 940068294a698657…

MALICIOUS

PDF

108.2 KB Created: 2021-09-02 14:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e2ed1d55c76acd18a6306c30678130eb SHA-1: 92df12add745e9c499f4bdfec4f774505d292816 SHA-256: 940068294a698657643e8876d79a5b5f1a2add8398c7d94be938993385a1cd8c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1552

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 https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/f697bd148dd57c9bdb7248899d1c0821/rerijuzibodijasaf.pdf In PDF document text
    • https://www.aifimm.it/admin/inc/ckfinder/userfiles/files/79808601510.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a359809b939---24348149720.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/a6jk4u617p1qaokm8mi6rea9c4/muluzorosajas.pdfIn PDF document text
    • http://mtcclassof81.com/clients/0/0a/0a45bd3013a8cc77df817aa526a911b1/File/vekiberalibemogofonolom.pdfIn PDF document text
    • http://moscowballet.ru/userfiles/file/63313782295.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c852ac9a68---wajafolovorejizenebejoxi.pdfIn PDF document text
    • https://zahnersatz.pl/userfiles/files/voruxiragexunifinugusa.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a0c7ac0d5a9---42427064478.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a137133734---76690603055.pdfIn PDF document text
    • https://bhopalliteraturefestival.com/mpsdp/uploads/files/tegotodudopoz.pdfIn PDF document text
    • http://makairways.in/home/makairways2017/public_html/dowalumniusa/ckfinder/userfiles/files/91230996071.pdfIn PDF document text
    • https://kawanmto.org/contents//files/sivorojajijedanedawezafu.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/98fe4485af290529381bb4733cb40641/zuwoxevojekudaxitijuvagof.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160fba0acf3fed---53841182396.pdfIn PDF document text
    • http://identik.hu/editor_up/tenegobubefekabok.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/eae492add1b2950e5c8dbec2445557d8/31985263649.pdfIn PDF document text
    • https://hirurgija.me//files/41368108160.pdfIn PDF document text
    • https://led7.ru/file/51701790132.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a89e310554a---24371170031.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1dbed0303---40241398570.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160b224fc66c7a---82845878195.pdfIn PDF document text
    • https://marljivo.hr/userfiles/file/60348878948.pdfIn PDF document text
    • http://careerdynamic.com/clients/3/3d/3d9dba0a3645e5854abf1db7654b9c86/File/96944626083.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/0kgrcp8kcvi74hqns7728059q6/gatiku.pdfIn PDF document text
    • https://parfumzone.ro/files/file/jopuvusipexixabigonutaxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=bretton+woods+institutions+pdfPDF 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_off0001522b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1522B 18280 bytes
SHA-256: 67e2e25884495827df20e08183d9750e4786907c446ba51c21d15647b5988394
font_01_sfnt_off00018245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18245 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19A5C 10520 bytes
SHA-256: 84e43e3439a0bca6a5927671ea31fe170fbfb1a21cb37046a5a06a64fa4dcc58

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