Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0aa32e87562a01…

MALICIOUS

PDF

72.1 KB Created: 2021-10-12 22:05:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 041ad319479afc42408486fe7e049895 SHA-1: 0a99bc8023edf6cafcdb75f6e72e3fcd6192d55b SHA-256: ba0aa32e87562a0146c7dc2886784e68afa4308095e3f2afa0f0edc73671600c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8257

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://inwebjor.ru/uplcv?utm_term=separation+and+purification+techniques+pdf PDF link annotation
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614887bb94ae7---nokulisinubizafokoruwilu.pdfIn PDF document text
    • http://1night2daytour.com/ckupload/files/janasiralepele.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613568b9d34fc---21858203448.pdfIn PDF document text
    • http://cissi.it/userfiles/files/57156356687.pdfIn PDF document text
    • https://shibbirs.com/media/files/13864078894.pdfIn PDF document text
    • http://www.feniuniversity.edu.bd/app/webroot/ckfinder/userfiles/files/35533932074.pdfIn PDF document text
    • https://mgs-on-track.com/uploads/misc/files/20065469754.pdfIn PDF document text
    • http://launensia.cz/ckfinder/userfiles/files/warexojesusifajakabo.pdfIn PDF document text
    • http://nextlab-semi.com/files/fckeditor/file/25731517146.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140e497cb3c6---4140367901.pdfIn PDF document text
    • http://kingswaytyres.com/project/kingsway/uploads/file/sopivov.pdfIn PDF document text
    • http://jmyhship.com/uploadfile/files/kixugabigoredaj.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16163b6fd76933---winosojafek.pdfIn PDF document text
    • https://groupekineconcept.com/userfiles/file/16859210985.pdfIn PDF document text
    • https://ssangyong.adasenotomotiv.com/userfiles/file/zixoxoxexalidukurefiwan.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/28903043608.pdfIn PDF document text
    • http://studiodelcorso.eu/userfiles/files/55111134433.pdfIn PDF document text
    • https://www.tri-or.fr/tri-or/ckfinder/userfilesfiles/jefutubazipogaroba.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/werexe.pdfIn PDF document text
    • https://www.stnedu.com/ckfinder/upload/files/660564591.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/41060299537.pdfIn PDF document text
    • https://lose-weight.tw/upload/files/vesim.pdfIn PDF document text
    • http://www.ruben.pl/ckfinder/userfiles/files/66576895362.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614993d6688c5---misaf.pdfIn PDF document text
    • http://termocity.by/pics/files/75870904254.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_off0000c834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC834 10992 bytes
SHA-256: 4a9e4dd05b32dede0e2967a88552ba76d55e35df9080f017c31200e420c30e23
font_01_sfnt_off0000e16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16D 17612 bytes
SHA-256: 6d5a16658237907ebe7882fc9e6f6ff195108bf0bde07a9c51e87eccbffd771a

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