Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e01331e7dca43f3…

MALICIOUS

PDF

74.3 KB Created: 2021-09-01 08:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 24973da53249def6aec131a1a58fc18e SHA-1: b7a43f11bb36c196e2b93faf8fcceea41a5236a1 SHA-256: 9e01331e7dca43f3fde540b58ebc4b646093f631c23030b17d695f85fb17aa89
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and embedded URLs further supports this, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8891

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://chcial.ru/uplcv?utm_term=mf+hussain+is+a PDF link annotation
    • http://podlahypilat.cz/admin/file/tatovenakewubenisol.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7d2ac97a612c2f1715c33ef624c192da/26462807184.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/17561533670.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bbc7b541708---maronururewu.pdfIn PDF document text
    • https://vettercycles.ch/userfiles/files/91774969103.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8866f3809---daxelobodape.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/ea3e8b35b27a74ecd3a778d59ca022cf/53309480197.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/73901622574.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/f666dd494e69437f24dac0092de8d6cf/3655876410.pdfIn PDF document text
    • http://iphysiology.ru/upload/rimoradirososor.pdfIn PDF document text
    • https://poulinstrapscan.com/userfiles/file/noxijenoxawiweko.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c1bf4175748---69412445311.pdfIn PDF document text
    • http://scvumaichiramen.com/uploads/files/vewusarijepewudowurebamaw.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7ba9367a0fe60f5f3e129a0002032252/19235613371.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/vuvapomixijozowola.pdfIn PDF document text
    • https://www.reachcast.ca/wp-content/plugins/super-forms/uploads/php/files/594a0f9ad3c4f5d05ae81cd61ccd5488/fufeb.pdfIn PDF document text
    • http://zuche0551.com/upload/file/87552655513.pdfIn PDF document text
    • http://teamtrinity.net/trinitya/file/susowoguxukew.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608aacc2bb702---detapalinamulid.pdfIn PDF document text
    • http://gyuco.com/uploadfile/files/20210829_061258.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/ed2442544ee8f38917b07c69e9664c2d/23684153148.pdfIn PDF document text
    • https://baptistfriends.org/media/keviwegusexaz.pdfIn PDF document text
    • https://ovalpolycoats.com/media/gusujuxozatanumagegatu.pdfIn PDF document text
    • http://vogiantinhmach.com/media/ftp/file/sunomefe.pdfIn PDF document text
    • 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_off00010e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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