Malicious PDF — malware analysis report

Static analysis result for SHA-256 99700e9052407694…

MALICIOUS

PDF

82.5 KB Created: 2021-10-05 23:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 2b145f59cd35774d1c11c2decb9bb3a4 SHA-1: cd4e45462ed9119f60c9ce95b2a95e7fff41f2eb SHA-256: 99700e90524076943d4162f120379c18cfd8e971679647d73033fbe957005c47
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting it's designed to redirect users to malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of embedded JavaScript points to an attempt to execute code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lagrupacio.cat/file/gaxisomupalik.pdf In PDF document text
    • https://projetovm.com/uploads/files/tulukosovijep.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/44598727631fcf97dc77dbf39b2d6691/luvesuvaga.pdfIn PDF document text
    • https://sunridgecorp.com/uploads/files/202109040509184474.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210901_FCC34A1ADD7068BE.pdfIn PDF document text
    • http://ahjygjg.com/upload_fck/file/2021-9-23/20210923130525605342.pdfIn PDF document text
    • http://yung-shun.com/userfiles/file/35936281226.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155e36249ebc---gexar.pdfIn PDF document text
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/20042074210.pdfIn PDF document text
    • http://leguido.net/files/nurovusa.pdfIn PDF document text
    • http://kangshi-you.com/uploads/files/202109120457028179.pdfIn PDF document text
    • http://saveondealz.com/ckeditor/ckfinder/core/connector/php/uploads/files/nulujasolonufarenofowas.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/vulevivagubonewevu.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/vubuzogawifinilu.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/v4gv0uukfvtlsbt5a5aq550rks/rilexejawonuxegapenonagid.pdfIn PDF document text
    • http://www.rongoldmanlaw.com/system/js/back/ckfinder/userfiles/files/43199675454.pdfIn PDF document text
    • https://leavereview.com/customerinterview/ckfinder/userfiles/files/91649075466.pdfIn PDF document text
    • http://mmdplus.com/userfiles/files/20210908_163556.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-10-2/20211002154809604642.pdfIn PDF document text
    • http://paletydozahrady.cz/ckfinder/userfiles/files/52910160979.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/xazoriv.pdfIn PDF document text
    • http://tentauto23.ru/ckfinder/userfiles/files/50570872200.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=ragweed+allergy+todayPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/21053986099.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_off0000dfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE5 17468 bytes
SHA-256: 2fe77225439d0498bd956026deeedb6b0381e53f4e89dba020351a2a48d8cc81
font_01_sfnt_off00010d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D53 10304 bytes
SHA-256: fc46fe8ffcd3788e14b6beb0a40ef33a102621fcef4f9c93e198ce1dfc38bf9b
font_02_sfnt_off0001248d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1248D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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