Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2cade20305eba9…

MALICIOUS

PDF

70.4 KB Created: 2021-09-25 00:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7195dc4e5ffd4d4959af1ad2f9f89879 SHA-1: bf94388ea42e4b4f69fe50ffc11c2035b2826c1a SHA-256: 9e2cade20305eba9fe4e07d98329c63674f8316ce661948dd71cae0e5b75e58c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which point to compromised WordPress upload directories or disposable hosting, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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.
  • 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://bc2000.order-pro.com/ckfinder/userfiles/files/55225032782.pdf In PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/somarixadepagosumipoliga.pdfIn PDF document text
    • http://www.frank-diagn.hu/userfiles/files/banurewegofakirifoputo.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/jebox.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/luvexunawoxubumobis.pdfIn PDF document text
    • https://wfbulgaria.com/uploads/wysiwyg/files/74935216903.pdfIn PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/lukig.pdfIn PDF document text
    • http://szerecsengyogyszertar.hu/editor_up/kigaj.pdfIn PDF document text
    • http://puisan.ru/uploads/file/rezitufiresugapagogibabox.pdfIn PDF document text
    • https://peterdegendt.be/file/86990443927.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/3822767599.pdfIn PDF document text
    • https://pvcmikser.com/upload/files/mipekoxizafazorunodobagaj.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021091104002773499.pdfIn PDF document text
    • http://6nergy.fr/6nergy/sites/default/user/file/bemexasorotusedefagoritup.pdfIn PDF document text
    • https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142a5d5130ce---46823557961.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/gudukubosejipiragenasuv.pdfIn PDF document text
    • http://steelbo.com/uploads/admins/u0/files/20210919173644.pdfIn PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/dexonuvozaxago.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/4v5niaarqsqu2f21v4fib6smm6/purutofisugu.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/kogisewudunizede.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/varazijegefibosepawa.pdfIn PDF document text
    • http://museodegliarazzimarsala.com/userfiles/files/tojivivunizor.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16142553c69ec0---fosoxanewemo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=can+i+upgrade+my+phone+ramPDF 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_off0000b21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB21D 16320 bytes
SHA-256: 9b3a0c2a5e193d16a4ceda761aaac6100652d6f339721e947bed652720d0f58f
font_01_sfnt_off0000db6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6E 10772 bytes
SHA-256: 17724333607b3dbd68a853e408da3dd4bbd3bbb6774f3e6edd5b48ea2ad16ae1
font_02_sfnt_off0000f3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1