Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ccf5e77069e6a9…

MALICIOUS

PDF

72.1 KB Created: 2021-09-04 13:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ecb85426588e89aa217a5d3996f028cc SHA-1: 416f7f39f1284babe541960c299b05b0a302d00b SHA-256: 97ccf5e77069e6a99f86e28d0bd8b555566bbbbbb70ccd259feb322a2f2fe563
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of links pointing to various websites, many of which appear to be hosted on compromised or disposable domains. This behavior is consistent with a link farm used to distribute phishing content or malware. The ClamAV detection and ML classifier further support its malicious nature, indicating it's likely a phishing or trojanized PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8615

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 http://pttaccounting.com/userfiles/files/25523384339.pdf In PDF document text
    • https://riolospettacoli.it/filesUploads/file/78018650722.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611018f4f1d8a---49854225472.pdfIn PDF document text
    • http://oryginalnedekoracje.pl/userfiles/file/73544540484.pdfIn PDF document text
    • http://eaas-journal.org/survey/userfiles/files/domirujobojizegojo.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/79205194761.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/mosemofilejogonorajuzi.pdfIn PDF document text
    • https://galerieportelouise.be/userfiles/files/60938306390.pdfIn PDF document text
    • http://8njl.com/userfiles/files/fovureguvojumovuze.pdfIn PDF document text
    • http://jawarakreasi.com/file/metofagagodipofutuduvagiv.pdfIn PDF document text
    • http://ytlcases.com/userfiles/file/48843137832.pdfIn PDF document text
    • http://eastwoodfamily.net/userimages/ruvefunim.pdfIn PDF document text
    • https://netiko.ge/img/Data/file/fedareguxavewunux.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160f1221a5970c---15407228307.pdfIn PDF document text
    • https://comobrew.com/newsite/images/user_uploads/file/wofemarotuwunax.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/16076240a392d8---31484364701.pdfIn PDF document text
    • http://aydinservis.com/ckfinder/userfiles/files/34003244692.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/64f23e7d3281377864f1a6ad1feec66e/27055044623.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/bdae3723d1a6a3ce9018e10bc2906f72/widekaponasurabalifa.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/jetamilexifufegabokiberu.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/50235248623.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/9cfdd121aa85b6d14e71879c6d423d0c/karunubudusujaw.pdfIn PDF document text
    • https://eletroluz-al.com/_IMG/img_internas/file/zegibamorebegor.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a62b35474b8---6923921204.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/74173574079.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=conversion+de+unidades+fisica+ejercicios+pdfPDF link annotation
    • 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_off0000da42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA42 19192 bytes
SHA-256: 504ed40d76f0a61d27ca3f5fb3032e015f8717f78975414a08ae9ec5b8fc0c83
font_01_sfnt_off00010b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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