Malicious PDF — malware analysis report

Static analysis result for SHA-256 709b95148b211652…

MALICIOUS

PDF

84.6 KB Created: 2021-06-26 11:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d676fae3d4d5e43cb8b7621d8e5eb5b6 SHA-1: d3d5b215cf3b135b37af644eb675cd97cbc0033b SHA-256: 709b95148b2116528474760fec4a5ddc9d13408c1e9e2878415201121ca0341d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm used to distribute malicious content. The presence of external URIs and a link farm indicates an attempt to redirect the user to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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
  • 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
  • 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://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/9knfmlorcj0giku9hbas0c3ci5/vopesegakenub.pdf
    • http://alexanderkanevskyartgallery.com/clientMedia/file/rozeme.pdf
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a1c27fa00---lodobozitudirafegutideja.pdf
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa53cf9f8ae---12087863650.pdf
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160af23a84ffff---pimirezozu.pdf
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/28f8f81545c1522b0228751d4a439065/89156320268.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb2dd0ce30---96429782981.pdf
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/23feaf8704b3b6f1bdee6ddf32efcd3a/41388466969.pdf
    • https://cardion.dk/gfx/fckimages/file/99225592562.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/9338aa5affde966f440193449412c515/pamalitaf.pdf
    • https://beatmuellerfoto.ch/userfiles/files/vimoxefubaveborowaked.pdf
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/igp8ps8vcujh8a23at041jhl9s/43490931683.pdf
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160718dc63e96d---22876516685.pdf
    • http://parkhighclassof60.com/clients/871169/File/nobulopo.pdf
    • https://aedwea.com/upload/foto/33389399996.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/e828ffa04a6d981f10833a936bb2434c/kujimaxojijazo.pdf
    • http://bisenzia.it/userfiles/files/foniladoduputur.pdf
    • http://arcadia1973reunion.com/clients/3/33/33cb7023d77084166ed027ca16b579b7/File/77435916120.pdf
    • http://maidichike.com/upload/files/59625169674.pdf
    • http://mnwebdesign.dk/userfiles/file/jisikikeg.pdf
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/m2su0tdoc7c48k392u6nb0o7dn/kamifopojetarizusexomemu.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607232f4f410d---17486485973.pdf
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/bba44a13a787d7adf4bc95fc810b1194/7804101889.pdf
    • http://musiconthebay.org/clients/2/26/269dd5bc96e197da989a8dccc71442af/File/96774169471.pdf
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/e476422fbcabdac83f68027c5b4cfab5/gorudoto.pdf
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c779b5c6ad4---davelasebotufefun.pdf
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d3dca0d9dcd---zidotugeviwotisoke.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=open+circuit+transmission+line
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e438.bin
ff2a42511eaa8e85faa4f57b0ade32a762a1a810520718814431a09e87a67ab5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE438 10660 bytes
font_01_sfnt_off0000fca4.bin
fd28d9e38dcd26abb99ae7b000173f62c1fc7f3b9699c7e352126828e5143c66		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA4 18932 bytes
font_02_sfnt_off00012ca1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA1 16792 bytes

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