Malicious PDF — malware analysis report

Static analysis result for SHA-256 47ee47004d3a7069…

MALICIOUS

PDF

291.1 KB Created: 2021-07-05 07:05:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: e9f4b40e5a00cfd60a07438054f094d7 SHA-1: 39e968bd2fa4e3d2aed5b1a67018de9dcf2472d9 SHA-256: 47ee47004d3a706998303524446c7f1c5acd0307b5541b31f7d8bc55b92ae10f
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was identified as malicious by ClamAV and an ML classifier. It contains multiple links pointing to compromised WordPress upload directories, suggesting an attempt to host and distribute malicious files. The PDF's structure and embedded links indicate a phishing or malware distribution lure, likely intended to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8590

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/642eb46ba2b5a49ace77e9e03aac0e4e/54010289526.pdf In PDF document text
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb57da43a53---pebofirunufezogogogudu.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/d9nv6rnun53pnkm971e1r9b241/95982276086.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/phtj3hjj5md09g7v4e7f4qtsd3/labobub.pdfIn PDF document text
    • http://ordinate-ltd.com/file_media/file_image/file/bujowojesitiwi.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51102634595.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/damaxafare.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/zalipemobixukad.pdfIn PDF document text
    • https://dovolena-jiznicechy.cz/uploads/74308110654.pdfIn PDF document text
    • http://focostrade.com/files/20210612084939.pdfIn PDF document text
    • https://aluminiosarla.com/userfiles_arla/files/jadutugokev.pdfIn PDF document text
    • http://kotolantopeni.cz/file/neromigesalosofalenobeto.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/df4f6280ff6f7c275ca4b2b3f02f4eda/ruzopomeximiwisuxisagisof.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/q8d2i4itncsd4hpoqmua0n8l67/15645927492.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/wapebuxasagewe.pdfIn PDF document text
    • http://ofipapel.org//ckfinder/userfiles/files/61281248674.pdfIn PDF document text
    • http://flywings.sk/UserFiles/file/22366697938.pdfIn PDF document text
    • https://hoanghaie.com/Images_upload/files/92294049886.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/53478792523.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/f92b8f45b8de05e74828176628010ddb/runuruvebafarunawozan.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/gmvgthf8n30v3ci36mpnfsqg2d/melunanonewa.pdfIn PDF document text
    • https://susta.vn/userfiles/file/xabuz.pdfIn PDF document text
    • https://aucordechasse.fr/vosImages/pifuxeviwasexe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=sql+month+name+from+datePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003d9cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D9CF 20448 bytes
SHA-256: a764d28c53d2da49ffd2b6dd6756ac6da48dadd6b396051f134036a23df068cd
font_01_sfnt_off00040f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40F8B 12276 bytes
SHA-256: 4b63544527f321189ad8388a11e8cca78c567b689dcbb7544d963b3cbb864701
font_02_sfnt_off0004371f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4371F 16240 bytes
SHA-256: 5ef7e20c43ec63259c23d22032bd2d0282148239607730cd8ddfa51a9511436a
font_03_sfnt_off00044d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44D00 10580 bytes
SHA-256: bce738321333d97ee153cbf2553b4149db68c101d85ab2809cd178d2767dcbe9
font_04_sfnt_off000464be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x464BE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1