Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b49386394e7af87…

MALICIOUS

PDF

77.6 KB Created: 2021-07-18 19:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 7e0d4776754d009f90c753c80bdbba4e SHA-1: c17c0a7bf78ac0c3300faf14166cfc869613d498 SHA-256: 9b49386394e7af87fbc36a1c39127963befd56e5199a6e39c2440b853c862b6f
124 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple compromised WordPress upload directories. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The primary goal appears to be directing users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/160a306704684b---ginir.pdf In PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af8701bc517---rutuvufajukapeworupogij.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/7994717235.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609d37ba9b470---37004169623.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b1e614ef7d---2823986113.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2238135bf5---rirekosuvasun.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/jonujoledokodege.pdfIn PDF document text
    • https://luyenthitoeic.info/userfiles/file/kijud.pdfIn PDF document text
    • https://2acontractor.it/images/file/83082573135.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa27bb7020---17716977889.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/75328736162.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b03f3b7d89a---58524857285.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce639caf69---86115372536.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/lezumi.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/f988584b9c8a19b065223527958565f0/48530120574.pdfIn PDF document text
    • http://granite1962.com/clients/869125/File/jizikunuvomiwobelur.pdfIn PDF document text
    • http://fittbike.hu/files/file/57352401763.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/288497b0577ec38e9aa2623231bde110/wobepopagijosomusopu.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757039d166b---diwavekijif.pdfIn PDF document text
    • https://daismene.it/file/tujadudikosatitokimudife.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/afd393f8455b9ed449fa283980f51ed7/gibugoxulurase.pdfIn PDF document text
    • http://www.truca-taoules.com//ckfinder/userfiles/files/30753297755.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813d347f047---773149006.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=humid+continental+climate+definitionPDF 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_off0000e81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81E 10460 bytes
SHA-256: 6171fd87e285808eb60c37b0fd1791b1344fabe7d144d4f13d46a3efd69d4095
font_01_sfnt_off0000ffbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBD 16956 bytes
SHA-256: d43e0a8886fe65ac6d59c4cdb804a19b8452faabd678cc2f0fcafc838d7dcc7b

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