Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2334cc7f1ee0484…

MALICIOUS

PDF

82.1 KB Created: 2021-09-21 05:31:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 1061b84e57bd8b26eddea2724479b619 SHA-1: 7e4b1a8fc7bc1ae8bf9e7f79bd95f48fca47740c SHA-256: e2334cc7f1ee0484fe2aa603492b2300479856e99f0a07351a84eb799fd1560b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded JavaScript is likely used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://interfacetravels.com/app/webroot/js/ckfinder/userfiles/files/fobanipofebob.pdf In PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/id31206ej7pmeoso2rgkb5l533/44125292703.pdfIn PDF document text
    • https://sportuna.be/ckfinder/userfiles/files/8379281783.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///12123436105.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161464c1da90d0---52181899206.pdfIn PDF document text
    • https://hongmao.tw/uploads/files/202109051949564590.pdfIn PDF document text
    • https://www.weboonline.com/ckfinder/userfiles/files/60722140982.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/86453959278.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/6kle9gc867tum9ak9q4ufl77cl/tafozazaderuvuxuri.pdfIn PDF document text
    • http://paraglider24.de/pics/fotos/1/file/janusupu.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/negunejilorazu.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/54312671000.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/98981814194.pdfIn PDF document text
    • http://prabashproperties.com/ckfinder/userfiles/files/kapafubifovasir.pdfIn PDF document text
    • http://uceng.net/_UploadFile/Images/file/ziwaxetumus.pdfIn PDF document text
    • https://vico-real-estate.com/ckfinder/userfiles/files/samezabokazanolefiwo.pdfIn PDF document text
    • https://triangle-electronics.com/assets/userfiles/file/27804239949.pdfIn PDF document text
    • https://livbiopharma.com/userfiles/file/78827161026.pdfIn PDF document text
    • http://tecksco.com/upload/files/83839038059.pdfIn PDF document text
    • http://tiwtactic.com/userfiles/files/84046886844.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/lojoxoluginoxaropujetube.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613007446cbf9---30048941791.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/23450199310.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=my+home+makeover+mod+apkPDF 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_off0000dd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5F 10416 bytes
SHA-256: eab38045ec5e7264c42f7ebafdfd74013f54980e90908fc908848f962b947276
font_01_sfnt_off0000f4f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0A 17656 bytes
SHA-256: 68e1840b7b0c752fd5338e5556bba418e886214a350b081b8b263e9c67c2a76f

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