Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2aa9b7cd854120d…

MALICIOUS

PDF

63.8 KB Created: 2021-06-24 15:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 128f085c0f8da61a8d9226e38257667d SHA-1: c4184b4fb4dbf9e8a065fbccc2e5a391a6a62b7b SHA-256: c2aa9b7cd854120dd3bc3c1cfe702be857badb5114b29ee96a6ebda4086ae51d
154 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML models and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple compromised WordPress sites, likely to host further malicious content or phishing pages. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but no direct instructions or executable scripts were found.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8608

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://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/e77f0a929152153687e1840244f00828/fogob.pdf
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/wesategut.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8427f861a8---gotesaves.pdf
    • https://topjobsnepal.com/ckfinder/userfiles/files/36325386477.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfba717433d---68614719879.pdf
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/a86632ef7a42e5fc1fb5219008563c2e/sekaxorigefijozafejemo.pdf
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/cf841e439d2dc7889905408df54361a5/zobapifolosilenali.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/be1c152f27a2fb65b110ebdce5b274d1/98748592686.pdf
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/oudjplfu55fdd2rm9vc62k8ftb/53369376157.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cec523f858---jikoxugam.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/18fbfd12b611dcce8ec025cc6fc16100/vuluvakawuzum.pdf
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/cee94767d56d5459b561dd3f1e3744e7/55612911304.pdf
    • http://aryajob.com/user_upload/file/xodiboz.pdf
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/nhm0g1e6pdk2n0gk2umgd9pecl/84985377604.pdf
    • https://canionglobal.com/FCKeditor/file/nugowirazaduk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=e+business+tutorial+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e014.bin
1359c8b2f62641688fae99a17011e2c5e2aa42ac2ced210282d95c9e83b6e39c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE014 5132 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.