Malicious PDF — malware analysis report

Static analysis result for SHA-256 4249f27dff7d8fa7…

MALICIOUS

PDF

62.5 KB Created: 2021-09-01 15:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 84b345255e18fe5990d7d5fcda078076 SHA-1: 42a814a2779e67ffc60d738f044862744689e4b0 SHA-256: 4249f27dff7d8fa7f12d5dcb29435fd2250ee99458a0853bf4790e20d281d197
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farms pointing to potentially compromised websites, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports this assessment. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7000

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://garglob.ru/uplcv?utm_term=the+hidden+wealth+of+nations+pdf PDF link annotation
    • http://studiomanzella.com/userfiles/files/direwuwibezemese.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1610333c8ec150---wusegiwurenubutakomoseget.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b4010c86c05---vizise.pdfIn PDF document text
    • https://avenue102.com/uploads/file/72770460489.pdfIn PDF document text
    • http://127.0.0.1/kardelenemlak/upload/files/nudovivijerarid.pdfPDF link annotation
    • http://murielbellhomes.com/userfiles/files/topumotukar.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/2h9482dlv64gooror2bmefa0ju/dewidajepudumo.pdfIn PDF document text
    • http://hengtaixin.com/HangShun/ckfinder/userfiles/files/66642336795.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/2b0ceeb060e70a0ae699e3536df56b16/lilikeveguzebujivo.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/904aeb6f1a2226d3ec5443bf1cb6a3d0/galibujukavafiberumajot.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081893ae81bb---31369410096.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/sufiga.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c83f12606---powadatilel.pdfIn PDF document text
    • http://1984wnhs.com/clients/2/25/250e0aaa51dad033202e6c34d8602b4d/File/jotuwiwek.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/j4cnuqfk1v28guklv3o1537sna/kadivan.pdfIn PDF document text
    • https://taiwancy.com/app/webroot/userfiles/files/69848619505.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160957a5d82596---koxulilanewinomamogufij.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/ghapbhktmcr20ie5768hh9i1ra/gojupibepusil.pdfIn PDF document text
    • http://jadever.vn/Images_upload/files/13897377277.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/1a5749ccea789d656253ce8a792154ac/60418513100.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/rosewetuzizalopazobowike.pdfIn PDF document text
    • http://it-hair.com/userfiles/36334215389.pdfIn PDF document text
    • http://marta-galan.com/files/varios/file/45788823695.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fd72a87c9b9---nuruwisozilum.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/17667d4607af3da7c07f8331c9750c85/xibuzotupejejipogivuwumuf.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/61489028401.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000beda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEDA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1