Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdd4e467a14332d…

MALICIOUS

PDF

69.3 KB Created: 2021-09-18 07:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: a9d122af8face4d017f84775a73fc998 SHA-1: 88b56f0fc000473196c36742b90f4ed73cc1f67e SHA-256: 2bdd4e467a14332d6136835f2e1fe7fce4e80e851fb5d16164351ad7859c4696
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1055.012 Process Injection T1204.002 Malicious Link

The PDF file contains numerous embedded links, many of which point to compromised WordPress installations and disposable hosting. The ClamAV detection 'Pdf.Phishing.Trojan' strongly suggests a phishing or trojan distribution intent. The file's structure and link farm indicate it's designed to redirect users to malicious or phishing websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3555

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://oniceh.ru/uplcv?utm_term=i+got+a+story+to+tell+123movies PDF link annotation
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/a43168d18dc9f0ee442166259bb48b01/13802735537.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1614554dc08e3e---galokezogod.pdfIn PDF document text
    • http://01host.ru/userfiles/files/tomidafudunijuxujukufo.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4bb268e4f---pazubopalet.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/duriwufejevuloromesi.pdfIn PDF document text
    • http://simonhoirup.dk/userfiles/file/riwip.pdfIn PDF document text
    • http://posuni.com/userfiles/file/52289840098.pdfIn PDF document text
    • http://1666-3668.com/attach/userfiles/file/mozawiripobujut.pdfIn PDF document text
    • http://about-dogs.ru/upload/file/49466660801.pdfIn PDF document text
    • http://dyneco.kr/userData/board/file/43122083828.pdfIn PDF document text
    • https://bibliothequedesarts.ch/ckfinder/userfiles/files/14130392849.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/bevibutofej.pdfIn PDF document text
    • http://rapet.hu/files/63654654875.pdfIn PDF document text
    • http://kronospan-mofa-hungary.hu/editor_up/rexotuwoxagud.pdfIn PDF document text
    • http://ajk-opakowania.eu/upload/fck/file/40445610209.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/52167401141.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/163079002832564732609.pdfIn PDF document text
    • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/23897542913.pdfIn PDF document text
    • http://dsagco.com/Upload/file/potulodisikoxejuvamoxi.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/rq0c1k0qf6m3rv4ttrv86e6nci/tazupurejuvuvitaleleluw.pdfIn PDF document text
    • http://shahnawazonline.com/uploads/files/89992755435.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613925aa7c17d---jukerimig.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/e26fd2a3d94d89005a9d996334a23ba6/sugekumutafuwuwevafujober.pdfIn PDF document text
    • https://luckyfood.itweald.com/uploads/files/6139ebd55091a.pdfIn PDF document text
    • http://cualuoiskydoor.com/webroot/img/files/gimagafaz.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/16130ac71683cf---jefazepanaje.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_off0000ced1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E8 10824 bytes
SHA-256: 5dd5d7c60637062ea21e96eb07d55ca192f08558977a6f9126e99983b9fca99e