Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed9366ac0c60cbb…

MALICIOUS

PDF

78.9 KB Created: 2021-09-17 13:51:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 5adb14f916716e0f241d04c6fa674c61 SHA-1: b5b1eef977580fe06875859a323931a4360d5389 SHA-256: 2ed9366ac0c60cbb102154197d83d29b5ddb7ae01cfae3ddf4fe85bf15cee11f
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely facilitates the redirection to malicious sites or the execution of further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=how+to+rooted+device+android PDF link annotation
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614147e72e406---lalunufoxepejumalox.pdfIn PDF document text
    • https://bednidhitraders.com/userfiles/file/jejukejagolawurikiza.pdfIn PDF document text
    • http://ansatrans.ru/admin/ckfinder/userfiles/files/28497529422.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/lumupoxabolitamiwukib.pdfIn PDF document text
    • http://klenderbio.com/upload/files/48496282539.pdfIn PDF document text
    • http://startent.ru/SITE/files/editor/file/litomabewaburexidiforegiw.pdfIn PDF document text
    • http://yugreat.com/filespath/files/20210906001810.pdfIn PDF document text
    • http://phutunggiahungoto.com/uploads/files/48940218298.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eaed410973---rabus.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e6e07bd734---vasuvadutinebini.pdfIn PDF document text
    • https://hssanesteban.cl/files/xinurekidijotu.pdfIn PDF document text
    • http://cattaneoarchitetti.it/userfiles/files/18399235254.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/viwamaxezategefasana.pdfIn PDF document text
    • https://alohasafaris.com/files/93271116944.pdfIn PDF document text
    • https://koltoztetes-szallitas-lomtalanitas.excore.hu/ckfinder/userfiles/files/80832038169.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/41257072988.pdfIn PDF document text
    • http://alacarte-grafik.de/userfiles/file/pimiwugojamazisifox.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/vumegedalifebisi.pdfIn PDF document text
    • https://biholka.cz/uploades/userfiles/file/dewimegitot.pdfIn PDF document text
    • https://salondumariagededijon.com/userfiles/file/13398753755.pdfIn PDF document text
    • https://u-spot.biz/js/ckfinder/userfiles/files/72559760386.pdfIn PDF document text
    • http://the100voicesofgospel.ch/fichiers/newsletter/file/23813791380.pdfIn PDF document text
    • http://shengyaweb.com/uploadfile/file/2021090412205972.pdfIn PDF document text
    • http://secondhandgraphics.com/usrfiles/file/84139000533.pdfIn PDF document text
    • 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_off0000d375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD375 10292 bytes
SHA-256: 237c2bd06a3e1e8610900c0064a4fb91e837047af40b659cd5b6cc758cbdffde
font_01_sfnt_off0000eabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000102d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D1 16820 bytes
SHA-256: 304f8b916962da6170d95d6a34e96e748bccd546ae06d739b3791bf9b749a214

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