Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7b00e9f23c6589…

MALICIOUS

PDF

64.0 KB Created: 2021-10-22 10:35:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8d684102e89d879f70f724fdb9874aa4 SHA-1: 5696d1c0259c6855aa22e6218a52f58b7fd2ebba SHA-256: ba7b00e9f23c658987138982e21bd557da67377fec2941b70a699d8379d48184
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or appear to be disposable. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7793

Heuristics 6

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://hiroshima-teishaku.com/userfiles/file/zimunonila.pdf In PDF document text
    • http://panziofabian.hu/fck_kepek/71816233599.pdfIn PDF document text
    • https://taiwan-tiaya.com/upload/tiaya_official/files/53212084976.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161478744d00c5---4188307369.pdfIn PDF document text
    • http://konditsionery-zheleznodorozhnyi.ru/upload_picture/file/76796831194.pdfIn PDF document text
    • https://psicologopsicoterapeutaemdrtorino.it/uploads/file/31566127475.pdfIn PDF document text
    • https://uhcp.com/editor_upload/file/voxanujubeno.pdfIn PDF document text
    • http://baheth24cars.com/ckfinder/userfiles/files/9486334216.pdfIn PDF document text
    • http://juicy-group.com/editor_upload_image/file/leminefiwifusupa.pdfIn PDF document text
    • http://dexgerm.com/data/file/userfiles/files/9118909066.pdfIn PDF document text
    • https://giraffeng.net/infodaily/gen-ckfinder/userfiles/files/92044521463.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/b77fa75cd8fa688dbdee57039ceddc4c/97303781000.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162f9fd9ccd3---82427436053.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16165deff5b8af---girirubo.pdfIn PDF document text
    • http://salondebellezaanamariaromero.es/ckfinder/userfiles/files/80360269407.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/33069277422.pdfIn PDF document text
    • http://bassbasement.org/userfiles/file/73028839536.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/9055101723.pdfIn PDF document text
    • http://kondicionery-lubertsy.ru/upload_picture/file/89966461787.pdfIn PDF document text
    • http://mosvag.ru/img/lib/file/muvubisikazan.pdfIn PDF document text
    • http://master-br.ru/img/file/bepikop.pdfIn PDF document text
    • http://komodovo.ru/upload_picture/85988511783.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/60922378b0f7e2563b800a0ec9eb4898/kumizujutepeperibemupadup.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e4e9934ce2---40337539528.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/u-9XGpgKpwY/uplcv?utm_term=isaac+asimov+the+last+answer+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_off0000da7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7F 17036 bytes
SHA-256: 126b2a5b7b62cc19e2871a24e6bcb670d5bd4cb6da95a185298b144d06d7a2c3

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