Malicious PDF — malware analysis report

Static analysis result for SHA-256 022d93097bae2353…

MALICIOUS

PDF

82.6 KB Created: 2021-09-18 01:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 6b67d511d6a15c3f1ff0eb3d55d67b1f SHA-1: e1bda3919875eb16dc9718e789fdaa871e5943c5 SHA-256: 022d93097bae23535c794b8d71ed056021b8c810e62389e33e004492af9c40c8
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs that point to other PDF files hosted on various websites, many of which appear to be compromised or disposable. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' confirms the nature of the document as a link farm designed to obscure the true destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://smidgel.ru/uplcv?utm_term=watch+stampede+online+free PDF link annotation
    • http://cnpair.com/userfiles/file/buwav.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/161380a2d2051b---xefirosisite.pdfIn PDF document text
    • http://rmgoals.com/userfiles/files/59697741952.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/7549752aeea2a36c8c70f8331c88ee0c/jexofom.pdfIn PDF document text
    • http://zenithmetals.com/files/42114361679.pdfIn PDF document text
    • https://alcoquimicos.com/ckfinder/userfiles/files/23118947652.pdfIn PDF document text
    • http://moutierrozeille.fr/userfiles/file/kolewexasudo.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/vitajis.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/ppljb1362klbj460d8982lhhsj/20990856140.pdfIn PDF document text
    • http://mercuresamuichaweng.com/admin/file/baveradepivevanoku.pdfIn PDF document text
    • http://giovanniseneca.eu/userfiles/files/fedasegisefi.pdfIn PDF document text
    • http://boletin.alicantehosteleria.com/lib/ckfinder/userfiles/files/74048973677.pdfIn PDF document text
    • https://drproperty.in/userfiles/file/zanaxijekipa.pdfIn PDF document text
    • http://synhbio.com/upload/files/wozeguz.pdfIn PDF document text
    • http://1666-3668.com/attach/userfiles/file/621175864.pdfIn PDF document text
    • http://pumarecovery.com/userfiles/files/suketu.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/puvikusirimimopoz.pdfIn PDF document text
    • http://avstralianature.ru/ckfinder/userfiles/files/tezuj.pdfIn PDF document text
    • http://startent.ru/SITE/files/editor/file/zaxefum.pdfIn PDF document text
    • https://ginecologmuresan.ro/ckfinder/userfiles/files/39923702060.pdfIn PDF document text
    • https://songhong.info/userfiles/file/29339235913.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614300088f840---75471264854.pdfIn PDF document text
    • http://furniture83.com/upload/files/lenaxadavujakuvejusobudo.pdfIn PDF document text
    • http://saxonrt.hu/img/userfiles/files/32795388022.pdfIn PDF document text
    • http://agenziaimmobiliarecannavo.eu/userfiles/files/giwoluguri.pdfIn PDF document text
    • https://ww150003.linebot.net/upfile/files/20210914142605.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_off0000dd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD17 10880 bytes
SHA-256: 8faeb13cf2f2bca7b85895c4492d79e6465f3f046db4ac055866f0afcc225f62
font_01_sfnt_off0000f604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF604 17988 bytes
SHA-256: 464d51103b4c6271b9df567fb10e206febd017b0aab0cc280c8a50f8d8751485
font_02_sfnt_off00012461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12461 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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