Malicious PDF — malware analysis report

Static analysis result for SHA-256 3299c23ced28b695…

MALICIOUS

PDF

73.7 KB Created: 2021-08-10 07:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 1a6dea8a6737995569ca6e8e067ac47e SHA-1: 76ec41f7534c0d26ddf2331cffd08a73d6f35739 SHA-256: 3299c23ced28b6953ba38ecf6247a0b9d04da72d2a169446e3b39441a5984676
154 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8477

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://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/pg3p21mg3rrlpadvdbsse36gtp/3282868287.pdf In PDF document text
    • http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/8057914172.pdfIn PDF document text
    • http://alexdisinfestazioni.com/userfiles/files/22253481402.pdfIn PDF document text
    • http://herfon-machinery.com/images/ckfinder/files/20210802191840.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/7bdd30c8c31920f724c8e06e57b4576e/86087486845.pdfIn PDF document text
    • http://kfbi.ru/content/file/85741240358.pdfIn PDF document text
    • https://srmhomes.com/images/bulk_images/files/noxawebixomoruronavemaxu.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/64382a81347c8fe3760aea7dc5326138/32310000900.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095b2fc02fb9---lopupikajepuj.pdfIn PDF document text
    • https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/fe9k5ljl3v1kpmq73ut8vreuvv/2474062250.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/98547816782.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ba748aee674---rugedawovekuzedukepi.pdfIn PDF document text
    • http://togetherwewalkny.org/clients/2/24/2411cc079aa0f0d7fd57f81c6163ecfd/File/92636589822.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/suvubibukiziworob.pdfIn PDF document text
    • http://ypcalumni.com/clients/2/24/24042806289e0d450134266962f0a0d8/File/71166226328.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/31120298306.pdfIn PDF document text
    • https://amadesafar.ir/basefile/amadesafarir/files/fogazele.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/28353907207.pdfIn PDF document text
    • https://olympicwroclaw.pl/zdjecia/fck/file/mitukuwesozaxasavofuwef.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/dae8d6bc9cfa6d4bc740579bbb46dba2/69409074587.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/21454782940.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/f1fa09239dbf0f1b7b2b4493d63a037d/bimopo.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/567a2093b5a21ffcc6d44e87aa4307e1/48054687813.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/sarazizibomu.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae84e90511---wekejaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=what+is+the+fundamental+difference+between+ifrs+and+gaapPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14E 17260 bytes
SHA-256: 1401861af7bef96901c37a00a4dea6a7b3b27b569b7dadc081bda2bffb84e971