Malicious PDF — malware analysis report

Static analysis result for SHA-256 019ade968eccb219…

MALICIOUS

PDF

69.8 KB Created: 2021-09-28 03:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 146a2ed6cd133b597af1692c66afd707 SHA-1: 3df4e64dfb5c4b8d95dd466a9b96df94124169bd SHA-256: 019ade968eccb2199a5c370e85c44a57c2abbb4a9801a1534c0274b7da8a8e74
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, including links to compromised CMS uploads and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://nomylo.ru/uplcv?utm_term=chrome+android+translate+website PDF link annotation
    • http://agataklimowska.pl/userfiles/file/46595856755.pdfIn PDF document text
    • https://magnanelli.com/userfiles/file/fukixep.pdfIn PDF document text
    • http://krukewittfarms.com/userfiles/file/lumiguforuwin.pdfIn PDF document text
    • http://generaldistco.com/images/file/21598542895.pdfIn PDF document text
    • http://palazzodiaz.com/userfiles/files/gevuxufawemo.pdfIn PDF document text
    • http://foodchemsino.com/d/files/putezuvegixazik.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/tosijajiwusi.pdfIn PDF document text
    • https://tktravelkorea.com/FileData/ckfinder/files/20210924_976DF60AB512D6A2.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16131557e706ac---46534280557.pdfIn PDF document text
    • http://hoangminhceramics.com/app/webroot/uploads/files/wijopekarupov.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613d24f2f2bd6---buwuravajorapusisigolek.pdfIn PDF document text
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/98498540867.pdfIn PDF document text
    • http://tekizolasyon.com/ckfinder/userfiles/files/guxuvereg.pdfIn PDF document text
    • http://edu-soft.ru/site/htmlimages/file/91713266246.pdfIn PDF document text
    • http://sp2wronki.pl/fotki/fotki/file/55201915778.pdfIn PDF document text
    • https://kingdom.vn/userfiles/file/20231720474.pdfIn PDF document text
    • http://jadeite.ru/images/file/negofofitinanisedipazonum.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16141578785430---muliriz.pdfIn PDF document text
    • https://semangkamerah.com/contents/files/26139468953.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/60692864352.pdfIn PDF document text
    • https://greenlakepaint.com/ckfinder/userfiles/files/644206893.pdfIn PDF document text
    • https://habibitours.net/ckfinder/userfiles/files/93969625919.pdfIn PDF document text
    • http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/93674948022.pdfIn PDF document text
    • https://navoloki.mebel18.com/uploads/files/94213941093.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/r8jaqblrn8s68ufh36e6j1fj7c/fufoz.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_off0000b0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0FD 10768 bytes
SHA-256: 75ac017e1c347053c7e5116ff091464c6a3fc8b7dced309f51c498f71bf80a40
font_01_sfnt_off0000c9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BD 15144 bytes
SHA-256: c88386a14b3a14dfbbf66fbf7c8f2337706b1b78b9e9f9fa51d3c9b7808a63ce