Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6928c1576fc374…

MALICIOUS

PDF

84.2 KB Created: 2021-09-09 01:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3ab0a0863488d1adc768b82bbd5f269f SHA-1: f86d40ebb743012be5d885e4690c728b004a79e2 SHA-256: 6f6928c1576fc374547cda37c543b083cf89255e4a31bda7cadef17bc4f20877
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains embedded JavaScript and presents itself as a link farm, with many URLs pointing to disposable hosting or compromised CMS uploads. The primary purpose appears to be directing users to malicious sites, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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 http://leeandrewdavison.com/download/guvesaloramujifuxudu.pdf In PDF document text
    • http://goldcoil.com/uploadfiles/files/tukidadoxet.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/vatevojalisaraxitim.pdfIn PDF document text
    • http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16134a18e115c6---xugarifimukakoveweji.pdfIn PDF document text
    • https://www.hippocratio.gr/ckfinder/userfiles/files/27065797612.pdfIn PDF document text
    • http://colorsoftexas.com/ckfinder/userfiles/uploads/tijikibigazanivet.pdfIn PDF document text
    • http://nhungbaithuocnam.com/img-tvdl/files/wunexemowawovavotide.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/mosixojit.pdfIn PDF document text
    • http://rainhouse.kr/data/editor/file/4933226133cc4f29348.pdfIn PDF document text
    • https://uslugiinzynierskie.eu/eurostyl/photos/file/83574780961.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1612f4bf96bcb0---67551490285.pdfIn PDF document text
    • http://instalace-charvat.cz/userfiles/file/63536597608.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161321c9d8dbbf---teroxiniwitugevaraw.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/82981237619.pdfIn PDF document text
    • http://gymostrov.org/gymostrov/userfiles/file/3026333155.pdfIn PDF document text
    • http://limuzine.md/userfiles/file/46473362243.pdfIn PDF document text
    • https://klcmekatronik.com/ckfinder/userfiles/files/jepisadelakonebidakug.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/d350caeb2c6821dbd08eaa920e4483ea/25293609471.pdfIn PDF document text
    • http://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/mozoresumuwoxaxosi.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/88384437125.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/eca163e1dcbeb34948aeac9095360d65/tesikixel.pdfIn PDF document text
    • http://marklaliberte.com/fckupload/file/pexabet.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16138cae11d733---suxufujib.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ij3m38eijmtsm6vej35tiv8b70/58934190149.pdfIn PDF document text
    • http://hsi-international.com/ckfinder/userfiles/files/duvosagijinikejipexibere.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+hack+back+into+your+snapchat+accountPDF link annotation
    • http://louisiana-arts.org.s150269.gridserver.com/siteuploads/editorimg/file/74028093820.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_off0000e2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC1 10816 bytes
SHA-256: 88264d078ed7b8f314185d26f3d4e5393400e603e65e2b7799901a3314fd7bea
font_02_sfnt_off00011385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11385 18272 bytes
SHA-256: 0773532a695af17cd3f0f0491e448dc3fa09a6ed3ad6b81b4c6d3c227c434371

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