Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fa4a6a0ab21a24e…

MALICIOUS

PDF

74.8 KB Created: 2021-09-02 08:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9221071cc408123dd830dff1ec0bbb69 SHA-1: a530ffba657b64f6b8e406c7335ab863c558ddd5 SHA-256: 5fa4a6a0ab21a24e45f40755b946b6fb6fc833e23444697e4a0c7cbf17b06ec9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution lure. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites. These links likely lead to further malicious content or phishing pages, aiming to deceive users into downloading malware or divulging sensitive information. No scripts were extracted, but the PDF structure and URL patterns strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4142

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://medvor.ru/uplcv?utm_term=the+third+miracle PDF link annotation
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c397b1653d1---jeradukefobolupalawela.pdfIn PDF document text
    • http://sport-way.ru/img/file/gobeviromonedexotegex.pdfIn PDF document text
    • http://globalquestconsulting.com/userfiles/files/vagivumonege.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/9a88u26vo8iaj0nla8oi59kitt/29206090026.pdfIn PDF document text
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160946b02c65f4---40434799690.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608904a349c92---gikopefufe.pdfIn PDF document text
    • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/jodorutarewabaxo.pdfIn PDF document text
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160a3335b5d8b6---24451178982.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/qo6ve9babu3tcf28q07k43h6el/jalavagajefeluxajixuvaw.pdfIn PDF document text
    • http://kirilmazbardak.com/userfiles/file/fokasulosezaxu.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/12754875380.pdfIn PDF document text
    • http://mountcalvary76.com/clients/9/90/9062e1c9f2360b2cedac6e2854879500/File/jowug.pdfIn PDF document text
    • https://novinfasteners.com/userfiles/file/16858240259.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/zanazamixetamit.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/2q6p08h0bqeqkj3gp46nma3hp2/87675894999.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/579cf38725907774ba4d3229f3fe9a73/fapijawuj.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/6800668fac59c3d5bff2f774509c25c8/duwiju.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/aa9c7d7b11c2da569aa6793a8c3b4bb8/21017100062.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/161004162abe67---68557858455.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079517c80794---wutogujeket.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/cc10dba63e6e185c38a5a189fcad377b/foxadinesetigewapujorad.pdfIn PDF document text
    • http://dexgerm.com/data/file/userfiles/files/38356457839.pdfIn PDF document text
    • http://quaretti.it/userfiles/files/dosafepo.pdfIn PDF document text
    • http://dilimkebab.com/userfiles/file/jepejepuwoziro.pdfIn PDF document text
    • http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1629148000.pdfIn PDF document text
    • http://gianniarnaudo.com/userfiles/files/xigepijar.pdfIn PDF document text
    • 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_off0000e83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83B 10204 bytes
SHA-256: 0d07aa8815749cda63bf42d152bed718ee629a537be5581bd446a2d602447c39
font_01_sfnt_off0000ff12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF12 18016 bytes
SHA-256: 33c1ca12d0ef4898a8c78d5960cf1c4986b3f375ea86eece206ff706b839bf41