Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf9173be2e257c8…

MALICIOUS

PDF

62.5 KB Created: 2021-05-03 23:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5683f14256316cf5c339226e29ac4775 SHA-1: 1f2508aa4de0b6163b17a9b75f4c01050a9f1988 SHA-256: ccf9173be2e257c82d3248bf4ef9a417d8d20f4d61775fc7a6d06aeab55f8fd0
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content. The embedded URLs, such as http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e74ac3b665---dexasexopineropebikuroku.pdf, are key indicators of the distribution infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8123

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://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dc9644862e---rofemesusizunawavabij.pdf
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/bc91201b0787b75d9e5a5f0de552ae72/ruwelipev.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e74ac3b665---dexasexopineropebikuroku.pdf
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/bd0c52f5dae864d33c182f489b1531db/kojaxotajugibomefaduge.pdf
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/1qgp76a70o6lgdpglfch1mtn03/58019499723.pdf
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/rmnk5tgpgmn7brel2qmp1o79me/54960381427.pdf
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/a2b1a186daf9081648e8a715591b5533/bevefawoze.pdf
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/7c37e0421f8f2e4a5af6d9bb6328d6ea/97247838548.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/23fd040949b57fea088d3e1c3b167db8/nusadu.pdf
    • https://activepymes.com/pub/file/51397569069.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075e8ca1d6a9---39680520219.pdf
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/9doq3u871luvgi08857f51gjar/ginogavopow.pdf
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/95e434aae5546bd45ab4614332ec8bdf/29412390918.pdf
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/u1qlgvnov1qd1j4e1014ka9lc2/22938187534.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/6d8fbc6ff34e1e20eeea9e32ee2cb799/farufiwinefarerukag.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608edf53e98f7---wetapopev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=brothers+day+movie+songs++kuttyweb
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e17b.bin
9a93cd98a604671d0c34f49c4ed14d49050365afa5ae1de4a06f318adafc2947		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE17B 5716 bytes

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