Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e89140fc0ead749…

MALICIOUS

PDF

95.1 KB Created: 2021-07-24 17:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 96626aaa687c2b75eaa7fd5501a9cdcd SHA-1: bad2df3c12eb98df55eca46e082c87d2f5cdc52a SHA-256: 2e89140fc0ead749104e514dcf675dae09bb92e90aff4a96c94b40f61793809c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a URL with 'photoshop+cc+2019+tutorial+download' in the query string indicates a lure for potentially pirated software or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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
  • 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://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/fdfe48f00ce74e59e9024c5ff115442e/bajabaxuxiz.pdf In PDF document text
    • http://eaeocs.com/clients/c/c7/c75ed17bfa54634cfc1039f1b599a7e7/File/tepoxabepuvefiz.pdfIn PDF document text
    • http://musicupclose.com/clients/f/f7/f7c291dfb329fbc33054893077acf627/File/91485775576.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/bufusiguropobavo.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/e32d13d1515877030f42a1304ba71559/zutetonuzaxisoxisovepa.pdfIn PDF document text
    • http://clase86marista.com/clients/25276/File/pefovesofokitadezeb.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/xokivelafutinufapal.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/o161vqu3i8cssojfltliqpg0lb/97310523770.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e227f8f460---17420951362.pdfIn PDF document text
    • https://ev-owners.jp/userfiles//files/60410044482.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/xijenunasotosememoveseg.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609074b0e1a83---pivezimalurisilepudoxev.pdfIn PDF document text
    • http://novo-foto.ru/ckfinder/userfiles/files/tenokizujosivovofuwopo.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/v52urbtgp70pug4cdoh1kp4bh2/fonajusorab.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ebe986553b---82897434374.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/files/73119000265.pdfIn PDF document text
    • https://cafesca.mx/ckfinder/userfiles/files/70635807443.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b94ecd8d85---texugavajamaralirezupa.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/4bea125138cfad3f72bde80599e9f1e5/65928509276.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/ribupozadipav.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/7162b60ee58df22c66c89dfebed5c959/netupaguwuputajipoxinebig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=photoshop+cc+2019+tutorial+downloadPDF 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_off00010f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F55 11128 bytes
SHA-256: 6b0f1a20290eca5e96fce528abfcb6542b95384f359e732bc01e8eb3b930db76
font_01_sfnt_off00012960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12960 16944 bytes
SHA-256: 2b18fb3148888a7fa909b78b0fff993b30ee60cd70123fddf9818ea6a105b4fb
font_02_sfnt_off000155ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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