Malicious PDF — malware analysis report

Static analysis result for SHA-256 980126ac1a90085d…

MALICIOUS

PDF

70.4 KB Created: 2021-07-04 07:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 019b6fad6461dd307a4cf0744cdd0a62 SHA-1: f66a85ebdd91d1f74ffbc90985935467fb9fcfaf SHA-256: 980126ac1a90085da0318db598af2308c984545d54632f957224dece9c253da5
124 Risk Score

Malware Insights

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

This PDF file functions as a link farm, directing users to multiple external URLs. Several of these URLs point to compromised WordPress upload directories, indicating a potential phishing or malware distribution scheme. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3617

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://baobihungphu.com/media/ftp/file/bapolavozuwasulukolola.pdf In PDF document text
    • http://ceresasrl.it/userfiles/files/keboxodivejazekokizexezig.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f106e4d481---89293708778.pdfIn PDF document text
    • http://gavinlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sowifekodirabowiwepume.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/ilhla716tnd5d2ljs3el0iraub/ketusonizafamo.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/79620408744.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/vulovafaruvakutedokes.pdfIn PDF document text
    • https://tessuno.com/upload/files/60d41525bcb09.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/xijofexazepuwube.pdfIn PDF document text
    • http://seamacros.com/upload/file/96767145823.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609a98f8101b8---rekitadekuvabir.pdfIn PDF document text
    • http://ozari-ua.com/files/file/dalez.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16086bd14bb262---felatojolusuzafusuki.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adbcea325b0---visufigifujosolalubafo.pdfIn PDF document text
    • http://nguoigiupviec99.com/webroot/img/files/vuzutipujod.pdfIn PDF document text
    • https://apoiotelecom.com/imagens/img_fckeditor/file/80976142845.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/78577468795.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/39345924443.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/295e9695dde6228152d3634ebf90750b/30122894744.pdfIn PDF document text
    • http://kondicionery-vidnoe.ru/upload_picture/file/nopasowewijejetesixowura.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607763ad9c74a---jadojupirasidoduzaw.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/e2047c6e9bd5fc80ed4c294da8934075/40485044259.pdfIn PDF document text
    • http://basumati.com/app/webroot/ckfinder/userfiles/files/kurolemovumupoz.pdfIn PDF document text
    • http://crabber81reunion.com/clients/b/b6/b60cf3d631ff247311937b5f15bedc89/File/gomibowug.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/5030452578.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/vuler.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=parts+of+the+house+reading+comprehensionPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FB 11120 bytes
SHA-256: 00d9c415da6ff126aafef73da9a576933329ae60968d7419d82ada4ccc3703a4
font_01_sfnt_off0000f38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38A 16112 bytes
SHA-256: a493cf14d42598d256b41302b6b737aafa7e6b0f151a2977567a5726682abbae