Malicious PDF — malware analysis report

Static analysis result for SHA-256 2398511310bda449…

MALICIOUS

PDF

70.9 KB Created: 2021-09-07 08:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 9c993a0ff9506b5cc6a43aa51ff6f411 SHA-1: 466061e8029e72f47db29d090a8d0263a832b860 SHA-256: 2398511310bda44949007aabc391ad6e84dabb443f38e66c1cf2ee53bdaa6ff3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's part of a phishing or malware distribution campaign, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

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://mnogonomerov.ru/uploads/file/tapowuzuwipebox.pdf In PDF document text
    • http://movitecnic.fr/ressource/site-image/files/liditulunazariwabi.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/ovva2jchi541prh0dbuo1v26e5/nikexodimujomof.pdfIn PDF document text
    • https://bancodevida.com/bancodevida/admin/images/image/file/vukurimobep.pdfIn PDF document text
    • http://engroupe.ca/aym_image/files/ferotagubumuwavusoladuzan.pdfIn PDF document text
    • http://crabandclaw.com/uploads/files/xototakijobosifik.pdfIn PDF document text
    • https://www.cifphosteleriayturismo.es/ckfinder/userfiles/files/nalavufofop.pdfIn PDF document text
    • https://voziky-paletove.cz/mctree.cz/pictures/other/files/59027602225.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/gogudowajaniwuweji.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/493901ce5de522c3b9802ad4353f66c1/56649121451.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/60c97c0d496f1aadef168dff02f3c96c/42242885503.pdfIn PDF document text
    • https://estudiowebcolombia.com/ckfinder/userfiles/files/88310716700.pdfIn PDF document text
    • http://www.koeru.eu/failid/file/bedijakelabim.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160845b235c6f5---12319330240.pdfIn PDF document text
    • http://delfosventures.net/userfiles/files/47809892728.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/75961756529.pdfIn PDF document text
    • http://coalcreekcentenary.com/clients/5/52/52f735e63eff8706e1a2a73a20aef632/File/907754412.pdfIn PDF document text
    • http://alternatifmedikal.com/img/userfiles/files/79921239682.pdfIn PDF document text
    • http://celiapopememorial.com/clients/4/45/45605e685ba8a3b32f56966823665796/File/25450856598.pdfIn PDF document text
    • http://shreejians.com/userfiles/file/beriw.pdfIn PDF document text
    • https://pmms-online.com/assets/file/fovenevumifukevutodinana.pdfIn PDF document text
    • http://rts-3.ru/upload/files/49905050144.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a20530d23f6---dajov.pdfIn PDF document text
    • https://billionbosses.com/ckfinder/userfiles/files/9281351072.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2cb9fab3ed---71178959258.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=feline+leukemia+pdfPDF 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_off0000e461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE461 17036 bytes
SHA-256: 3128e6060db1e01f38ff3a057db6af8a28bda485ceb46c33bd30cfd05fc44e1c

Open this report in the interactive analyzer, or submit your own file for analysis.