Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aec46a92fcef711…

MALICIOUS

PDF

77.6 KB Created: 2021-07-09 12:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8bcaafe00e915bb41acf2367e40d527e SHA-1: 50426ca29a27817d483c830c6dbdc7db7affc0c2 SHA-256: 4aec46a92fcef71110df17db28262a7e5bda619d69bbf1f6835f0813b33dcc47
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The PDF contains a link farm pointing to multiple compromised websites, likely intended to host malicious content or redirect users. The presence of external URIs and link farms suggests an attempt to distribute further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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 http://childhood-matters.com/clients/49507/File/65038229750.pdf In PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61143bf485---bobebodujeboxuwix.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2be9efd8a---potozakuloji.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/53797661964.pdfIn PDF document text
    • http://esebtekstil.com/resimler/files/71146404044.pdfIn PDF document text
    • https://olympicwroclaw.pl/zdjecia/fck/file/77124575767.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/r1ccmqqia3enl7l16mof08hfmj/99713109196.pdfIn PDF document text
    • http://amsaneeraus.fi/userfiles/files/21380467744.pdfIn PDF document text
    • http://w-f-l.de/user_img/file/42582462061.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/0e6face6bd920641b25e90718eb83e3c/nolonuge.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/3a61f623e633cdbcca70b4428bc34286/4912232500.pdfIn PDF document text
    • http://kaies.cn/upfiles/210701144653819042kp8r37.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/vafesep.pdfIn PDF document text
    • http://cheumst.com/upload/fckeditor/file/fuzubugeximulinuwifef.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/53911914690.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/bb53a564b7c483bc648fc53b3648ff28/86399998538.pdfIn PDF document text
    • http://osc-pribor.ru/products_pictures/file/83633525566.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/b9c703579d8e4f59b1bf2a4a95e885bb/salorumukuxasejatomawa.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/77045515195.pdfIn PDF document text
    • http://ipceurope.eu/assets/file/19997128894.pdfIn PDF document text
    • http://indagosrl.it/userfiles/files/givitedoxiwibasej.pdfIn PDF document text
    • http://esthebel.de/userfiles/file/56728903877.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/v8gc1pramnfvf106u5h89vqdcd/40843347451.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/732a5dbde64d647a7c50ac97af84eea4/32483159496.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607a02e21bf2e---nakenelamuzebazumokinat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=environmental+management+systemPDF 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_off0000e85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85E 10616 bytes
SHA-256: 615ef91870b9cb91ed2704a5cc619451c8065a2df25935c483d7e462fa240707
font_01_sfnt_off000100a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 16572 bytes
SHA-256: 044f15e9ddfefbe97ab2f31ffeb90610acac0656af60f905075b17db927f5b8a

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