Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a094d139b0ede14…

MALICIOUS

PDF

69.2 KB Created: 2021-09-05 13:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0a093f0db52c3212a4ecde1dc854a154 SHA-1: 535fe142dd54c6a765347e17370b57b4d2004dbd SHA-256: 9a094d139b0ede140f142e951210a050510d700426d1a20962e93a441317cc70
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to lure users to malicious content. ClamAV identified this as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The presence of embedded URLs and the structure indicate a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6736

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 https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/3aad65409081c173a5a7cdd0590451a8/texaminazegede.pdf In PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba41a66992e---1637566637.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/15fd696068af1a027fa8fedda07ac8ad/38814166952.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755a444b3fc---pabikeposulazetimedida.pdfIn PDF document text
    • http://iworking.vn/uploads/files/batofubakazosizajo.pdfIn PDF document text
    • http://tingyi-bnb.com/CKEdit/upload/files/tatetitenoli.pdfIn PDF document text
    • https://cfi-registration.org/buzzboxgift/img/userfiles/files/79557781983.pdfIn PDF document text
    • http://medizator.ru/ckfinder/userfiles/files/tonew.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/5059467772.pdfIn PDF document text
    • https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/b6d107e137e85df00d283b2a1b456ffc/39734679602.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/2203428960.pdfIn PDF document text
    • http://autobedrijvenindex.nl/images/uploads/64895338849.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160720509a6f7f---31657742518.pdfIn PDF document text
    • https://knurussian.kr/DATA/upload/files/202107140347247045.pdfIn PDF document text
    • https://stpeterscbs.ca/ckfinder/userfiles/files/gezenilolozam.pdfIn PDF document text
    • https://bbgpiti.com/userfiles/files/88070704214.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/109448688661108c3de9df9.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160bd92c1f2ceb---86580431727.pdfIn PDF document text
    • http://vaithun.net/upload/files/sodizut.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/75893967932.pdfIn PDF document text
    • https://segurodegranizo.ar/noticias/fckeditor/file/56619140918.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=mbd+english+guide+for+class+12+pseb+pdf+downloadPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB6 11292 bytes
SHA-256: b2e71e0b5428c804b69fca0267238deac06b1fd705fde56566a0d22a5a5c1621
font_01_sfnt_off0000e5e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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