Malicious PDF — malware analysis report

Static analysis result for SHA-256 0336fd80816ef560…

MALICIOUS

PDF

62.3 KB Created: 2021-09-01 02:24:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-07
MD5: ecae12567fad090037787493ff3782b1 SHA-1: 7e03597733d8198600e3696fb2198f11fe56cce7 SHA-256: 0336fd80816ef560514dd6dc4ac24309bd2aa6381ea71af2a03bfc812e4aa1e5
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or further stages of an attack. The presence of multiple compromised CMS upload links reinforces the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9490

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://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df81abbe99e---pinaz.pdf In PDF document text
    • http://fittbike.hu/files/file/witapa.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b9672b6bd10---95699101728.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160bf69c6afcdd---5902128387.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf486594c16---rojefirozar.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/1661e503538883778afd5fdb3329670a/83863425549.pdfIn PDF document text
    • https://autoroman-service.ro/imagini_ws/27174220050.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16086fc96836f4---72649972619.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a923d9e4bed---99668973226.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/03ubm7sdvoirpc0fskhk32tnuh/jisikesasibudelazij.pdfIn PDF document text
    • http://foto-klub.dk/userfiles/file/25974179881.pdfIn PDF document text
    • http://123podkrovie.sk/editor_uploads/files/jimafakidasobuparup.pdfIn PDF document text
    • http://nenorm.com/files/files/fixefekojitolidax.pdfIn PDF document text
    • http://lex.tj/img/file/12162626901.pdfIn PDF document text
    • http://intergeored.com/upload/File/wirimininitezo.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f233d86b1d---nejugebirowemolowi.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/14489005397.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/41721129794.pdfIn PDF document text
    • http://emannsltd.com/userfiles/7944963920.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/pms6rh6g3f8osjesdvogkvbidu/67196495107.pdfIn PDF document text
    • http://lateonsettay-sachs.org/userfiles/file/gexujugetexavibuxudupi.pdfIn PDF document text
    • https://cmsschoolkg.org/userfiles/file/supemunefagenuwezama.pdfIn PDF document text
    • http://elm3rad.com/file/vomevomurofagoj.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8c5a45e471---wigazosidemaje.pdfIn PDF document text
    • https://morganmethod.com/ci/userfiles/files/9283636027.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=what+is+12+tablespoons+in+cupsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C8 10776 bytes
SHA-256: f1d8693375a8eaac7df20f269bde2619bfb97af321e00781cb8d8f2909c6ea2a