Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c450a10edd4a6a…

MALICIOUS

PDF

74.2 KB Created: 2021-10-01 17:18:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ac6937912b7d171f1887fb92ced34a1f SHA-1: 7b3fe4133ad3ca5b07bd6050c925d67cdf9c728e SHA-256: f2c450a10edd4a6a7c17354bc014617067bbe47a6e5feb1c1acef563fc6ed47f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded JavaScript and numerous external links, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The embedded JavaScript is likely used to facilitate the redirection or download of malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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://bharatceramics.in/ckfinder/userfiles/files/lademitusitevijevofalu.pdf In PDF document text
    • http://vitccorp.com/uploads/userfiles/file/nubobalokugi.pdfIn PDF document text
    • https://aspirecambodia-edu.org/userfiles/file/9556638644.pdfIn PDF document text
    • http://alpinedelhi.com/userfiles/files/27735011128.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/40190639859.pdfIn PDF document text
    • http://antichigelsi.it/userfiles/files/20782106935.pdfIn PDF document text
    • http://aibrpjoaae2.specialty-match.com/upload/files/pevodom.pdfIn PDF document text
    • http://forepic.com/_UploadFile/Images/file/likepez.pdfIn PDF document text
    • http://garageanything.com/js/upload/files/43225529317.pdfIn PDF document text
    • http://simsoncantho.com/userfiles/file/mukebevanabiri.pdfIn PDF document text
    • http://lnhaihui.com/userfiles/file/20210906172212_1379675976.pdfIn PDF document text
    • http://hkalc.com/userfiles/62287555920.pdfIn PDF document text
    • https://geniodelweb.com/file/majifipunemojojedovogu.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/161463abb7eee2---norat.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/xitedazupavuviwizar.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/161517dc2bccaa---57260024550.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/95k0onfl56lsbcmmun9kh8amcc/bamerinivomumut.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/binuzeweviperobeju.pdfIn PDF document text
    • http://www.yeosung21.or.kr/ckfinder/userfiles/files/1632825894.pdfIn PDF document text
    • https://dehaventransportation.com/home/de/public_html/ckfinder/userfiles/files/18524197488.pdfIn PDF document text
    • http://jtg-antracyt.pl/files/file/86403785014.pdfIn PDF document text
    • http://thewellmanteam.com/userfiles/files/22099435926.pdfIn PDF document text
    • http://uklearningnetwork.com/userfiles/file/subelefifado.pdfIn PDF document text
    • http://volamthienha.top/userfiles/file/buzijozebixi.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613671aa42476---34539395091.pdfIn PDF document text
    • https://theloneranger.tv/clients/loneranger/ckfinder/userfiles/files/rimisirowopuxufaj.pdfIn PDF document text
    • http://danieldesignpro.com/userfiles/pujujatuginifigivudinomo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=problems+and+solutions+on+quantum+mechanics+yung+kuo+lim+pdfPDF 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_off0000b8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10F 17964 bytes
SHA-256: abcb6221e32b89a4bbc41b7b56e2eaf0a0d00ebc9cdf8401e766bf9acb3fb591
font_02_sfnt_off0000ff0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF0F 11660 bytes
SHA-256: 959010950ff8e10cd30c1e190e3156dcc07cade65c93ce22caccc10473e0de55

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