Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec5ee07811ae248…

MALICIOUS

PDF

64.0 KB Created: 2021-06-18 03:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3ac1c42e79e55af40b203c1a1fbf5ea0 SHA-1: 1ceddd6c9f7df397e1b2f5b87fb125cb519f272c SHA-256: fec5ee07811ae248c9b4aa06f246c43313d05081daa0021e4ecfccc22cf07804
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely serve as lures for phishing attacks or to distribute further malware payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8354

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://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/qdp8k7demftbea6tk6cgmd3hh8/fuzanilivivagumu.pdf In PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160831fd766ee3---64821629226.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160958e65444fe---19107554245.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/fonuwefet.pdfIn PDF document text
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160adb7504911d---jofolenumudazuta.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/a021da46da8f774480953fd8f99a13cf/gipexipigoxuserato.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/43249274777.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/088e5975c52f25985a065f05b494c976/80613400848.pdfIn PDF document text
    • http://libron.pl/fckupload/assets/file/zafumovararalovuruvo.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ed77cf322---genozes.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160852ea094535---37464946456.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/30ffbc9be3477229e91366d209f9151c/majopobotagakinalenevo.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/4hp2b1l4cj030uakvaqpfb6a2v/16362433229.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=in+normal+distribution+mcqPDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D5 5288 bytes
SHA-256: 23066113e92b915c15f1fca04c3dc1594ecf637ffa56c34bc884f6479e5cf529
font_01_sfnt_off0000d7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AD 12604 bytes
SHA-256: 8322dc3870861e80e231e5326b62fc64b8d74826338f36690422b79160a9da87

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