Malicious PDF — malware analysis report

Static analysis result for SHA-256 360d675605bd11bb…

MALICIOUS

PDF

79.7 KB Created: 2021-09-03 19:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 184bc5a5deeb52ca3d86bc413abd260c SHA-1: 244cfe785128a71cc658c52c5ed1ad6027e93228 SHA-256: 360d675605bd11bb6647a33af0fc9d61f54374475d7c6304c207d0253cc35cf1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these links suggests an attempt to distribute phishing content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5004

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://sloplast.com/userfiles/files/taxodi.pdf In PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c237bc16d2---75627725712.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/zakebejejuzupizexosepip.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/a712994495d14c8a701514eb6b720fb9/sopugipefopi.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d0dd8c28b4---berifipuzopudurabokob.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/75042450503.pdfIn PDF document text
    • https://doina.md/fckeditorfiles/file/nojedafozerukimiwa.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/76327131808.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16083d78bbff3f---30443156202.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b1bddb4ec96---wujirabovus.pdfIn PDF document text
    • http://fqcycpa.com/jingkelun/userfiles/files/20210703061810.pdfIn PDF document text
    • http://imhome-listings.com/userfiles/files/64066977590.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/gadizaj.pdfIn PDF document text
    • http://edilgroupdigiovanni.it/userfiles/files/sifipize.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161119b95deaf4---4747731682.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607497f2a4546---xosifaxiwe.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/55766267555.pdfIn PDF document text
    • http://fairmonteast1969.com/clients/876766/File/1977647466.pdfIn PDF document text
    • https://shreenathtechnologies.com/userfiles/file/56749126747.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160851acd31b38---rejodo.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080afa1c7988---56959612510.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/3a9e2c2e9d175789ebb5e4b5e22cfe97/19120596955.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=gcm+8+sjl+professional+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE375 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fb8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB8C 11020 bytes
SHA-256: 7ab651f8fa83c1057620b33e512496a160f2c3a10dc69fff26afde15fd1b4314
font_02_sfnt_off0001151e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1151E 16060 bytes
SHA-256: 64af0185a2beffa7382febdf957b2ddd2015d3985e5bc97cf8ad64f3c2914973

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