Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e6903bd3f1de4f…

MALICIOUS

PDF

93.5 KB Created: 2021-09-01 11:13:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 562771c90ca43f546cd171749f393e65 SHA-1: 3b847287cb0c17169a029cc0f402de1ba6e75d09 SHA-256: e9e6903bd3f1de4fc147757a3f8a7aa1ad8f52ce24f7c32f5253c4fc8a7b0103
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Static analysis revealed it functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains. The presence of numerous PDF links and the use of compromised CMS upload storage strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3105

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 https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/i59cclm1kvkbensgnpaq5hlv8h/67030162370.pdf In PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/sorokemiwupora.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/87681239643.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/a4f7dd594fc95226a40eea45eed0be45/60418328850.pdfIn PDF document text
    • http://strandedtattoo.com/file/gizavuzenijato.pdfIn PDF document text
    • https://ciiinnovationsummit.com/ci/userfiles/files/46480721138.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/51445449705.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/e1b55ca9e0a8a5f14a0a9bad1e2ada42/78016371317.pdfIn PDF document text
    • http://classicalgardenornaments.com/uplds/file/30037707577.pdfIn PDF document text
    • http://exhibitionchannel.com/upload/16369474396.pdfIn PDF document text
    • http://mspchicagolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rugurorotinejexoku.pdfIn PDF document text
    • http://jtour.vn/userfiles/file/50054573787.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/0ggtsrl74b96r7apd0b6m9rd83/31239957961.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/v367eebq21d78u2c26p0o4lqjo/bunamesoxogumuzavixu.pdfIn PDF document text
    • http://ndt-ultratech.com/files/lowexamagojoxemilefone.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/ee90382f3d2ba4300abdab6770cd5967/69564666695.pdfIn PDF document text
    • http://ailizia.com/userfiles/94473660503.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/a5db9b331da12e1ea5db1202186f5873/sitatekofeneduga.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/pobavijixe.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/8ac7368b2f34fb1bd944f9cacddf52b2/88414531121.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/xejiwuwuvilu.pdfIn PDF document text
    • https://jagamimpi.org/contents/files/sijivaxa.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16080e3c30cea1---wabut.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/trq7bl4jnqhp0htd4vovcq2hc5/nemexetuxudadamakanavupi.pdfIn PDF document text
    • http://kaowei.tw/image/files/20210527_193531.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=fast+of+furious+9+full+moviePDF 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_off0001260c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260C 17756 bytes
SHA-256: d07216684ab4953d14fde3d1cc7ccaad27d059910ffe37d85b676970b9ae5b80
font_01_sfnt_off000153ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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