Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceba10d3d091ac47…

MALICIOUS

PDF

61.0 KB Created: 2021-06-07 01:16:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 5aa283c7023bca8b887496c49d2cf031 SHA-1: 8e210bb399da5a4ae8c4b17597e311ab15b6f4ac SHA-256: ceba10d3d091ac478f25d2fd37bcf028fcc83cee9b78e53a670b0bd2f9aad646
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a link farm or phishing campaign. The embedded content, though partially garbled, includes a question about JBL speaker charging, likely a lure to direct users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8151

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://pistant.ru/uplcv?utm_term=how+do+i+know+if+my+jbl+boombox+is+charging PDF link annotation
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/38cee5e86d1e011e8f6a7e4f77f4f027/62096298606.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/tivopefisezakapedup.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/23548903263.pdfIn PDF document text
    • http://isystem.hu/ckfinder/userfiles/files/56042408080.pdfIn PDF document text
    • http://spc1991.com/ckfinder/userfiles/files/ririxevoroferijitu.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/zujinewavalarekovuniwimur.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b933fa5743b---57001200584.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/fipika.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/cgqn9dod23hgc7pkos479d0h4q/zopizepositedurogema.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/1b89bcfee4eb3c35851ddaf523e84fe0/21281390136.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/787cd7fee680efe5a2c74ce13192029a/tebimekabujiduv.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/b14c1d2aee9ab98d21a3fa20f7842c95/lomobegudasuvojopolusetil.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/91a5f1c3bcd58624c1835de996fafa98/7829505893.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/b06b961933f96be0fbe68a0fa2a8d008/16405979785.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/f119a456039dfb2f6cea523f40bab951/xuvurajinumazivemitiwed.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/4742282378a971e1c9e2c4c20639eb01/27967241133.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a148771cd04---ragakonugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CB 5940 bytes
SHA-256: 7924e6ac6a455e6b7ee0c25bb81b881fb4799aef64ad9d15b58133af0bb9d71c

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