Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3e62eb58b77c0a…

MALICIOUS

PDF

68.4 KB Created: 2021-09-21 01:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8be164df81b367ad0fba16359f41d57d SHA-1: ce9e0a97738acd5a0184869d9921dce4778cfab7 SHA-256: cc3e62eb58b77c0af6dc67e3b6f7a06fb5b80b46a62c0068a36590de196ccf5d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan PDF. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing lure, likely intended to trick users into downloading further malware or visiting credential-harvesting pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8818

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://kubablimel.pl/Image/files/xixamuzap.pdf In PDF document text
    • https://appvid.eus/userfiles/files/wirudirew.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/dosebol.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161444b950b8b3---60972865360.pdfIn PDF document text
    • http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210904103542.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/tadajefuzawajomujanuwego.pdfIn PDF document text
    • http://www.europesolidaire.eu/userfiles/files/70557900045.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139e5f852e4b---jamexamebemafew.pdfIn PDF document text
    • https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/12832825101.pdfIn PDF document text
    • https://laser123.com/geektic/files/rosat.pdfIn PDF document text
    • https://ceiling.holcom.vn/webroot/img/files/56714132433.pdfIn PDF document text
    • http://ch-bovi.com/upload/files/99467339847.pdfIn PDF document text
    • http://ydis.kr/userfiles/file/121900206266.pdfIn PDF document text
    • http://meta-min.com/files/kuninibulaporola.pdfIn PDF document text
    • http://newcityhk.com/userfiles/fixerolosu.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/85569279270.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/lbvqpjmcbjpefaevvijen78hm3/nelutisojumapifasanome.pdfIn PDF document text
    • http://labuchedeberce.fr/userfiles/file/kowenitubogorujomedugow.pdfIn PDF document text
    • http://aprt1day.ru/file/woregadomilapodigilenegu.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/12444164641.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/5e796050991a60efb443f01cfcfd1bd7/97638362534.pdfIn PDF document text
    • http://jolanyee.com/upload/files/202109202336406819.pdfIn PDF document text
    • https://foodthings.us/userfiles/file/nejizupelav.pdfIn PDF document text
    • http://reflita.lt/uploads/files/nudizasabefujuz.pdfIn PDF document text
    • http://studiostocchi.eu/userfiles/files/17908195928.pdfIn PDF document text
    • http://krr-nfe.com/suratnfe/UserFiles/File/dozatololaliwodunizusu.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/45943832356.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/dotixavuriwanekuva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=video+editor+mod+apk+free+downloadPDF 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_off0000e2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D3 18256 bytes
SHA-256: 41ac122801534418e9b4a3bc1000ba6b12c3410f987dc8cc5035a83cfc0110db

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