Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6b6eef5d577783…

MALICIOUS

PDF

79.5 KB Created: 2021-07-26 12:43:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b12c8da5e9eb24ce950356bec711931e SHA-1: 51a9e2f645111a3009ed8e414ddabfc637500f54 SHA-256: 9e6b6eef5d577783572e52c9ccd39c0fd5aefe155694dadd1b243abbda5850a3
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It functions as a link farm, directing users to numerous external URLs, many of which are hosted on compromised WordPress sites. The presence of these links suggests an attempt to lure users to malicious or deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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
  • 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://madspot.dk/ckfinder/userfiles/files/bepizafuwepikevope.pdf In PDF document text
    • https://www.prieur-equipement.com/ckfinder/userfiles/files/lobasitemavo.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce9655c67d---85072738140.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f31a898c6d---85780677920.pdfIn PDF document text
    • https://ksuskalology.com/images/file/7414811187.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/93298926898.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/61a3082742dec3586a1f36d6366a9d8a/96367152366.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/43fc830246d21096bb15258ef3b8dca7/jiwujorekimadi.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210612_101842.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607951e5bb4a6---65707687584.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/08313fee58fd0e25f0dcc6b16b2afb37/sowepuwikitemegoguzifepo.pdfIn PDF document text
    • http://greaterdeliveranceministries1.com/clients/61527/File/tamalukurugiwib.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9c9235452---90342373035.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/40970110752.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/kufewezolezuguminotos.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/16079b10027fe1---69683556580.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/59826647406.pdfIn PDF document text
    • https://jaiminsales.com/ckfinder/userfiles/files/31453298900.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/worijididutotopor.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160924f5de4207---tuwadefizejer.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+change+defiant+door+lock+codePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD443 16640 bytes
SHA-256: 2370e9295863d1e8d9095a095a42d2e77c5747d46b17ff391a90c970b47460a5
font_01_sfnt_off0000ffb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117CB 10756 bytes
SHA-256: 3a43eb88b929ec79dfb94971da3d2972ebe023641f8310d866789e04703ab116

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