Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d64e85b8c416f29…

MALICIOUS

PDF

76.9 KB Created: 2021-09-04 04:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: da96720ac65f1873ecf24dec9dcb3dba SHA-1: 844603488250d8c96ac66f62c4a540f461b2919d SHA-256: 5d64e85b8c416f2950cf2a29663bbdeaf0a1b6add8d0d5106b31649f9c15d74c
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to potentially compromised websites, suggesting a phishing or malware distribution attempt. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to decrypt a password-protected archive, a common tactic to evade initial security scans. While no scripts were directly extracted, the overall structure and link farm behavior point towards a malicious intent to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e37bb7613---29021456596.pdf In PDF document text
    • https://austdoorcaocap.com/upload/files/sokujezalamakuwevete.pdfIn PDF document text
    • https://geo-decouverte.kenamedia.ch/ck/ckfinder/userfiles/files/wokudanitejanunuk.pdfIn PDF document text
    • https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/lj3ilp61bulqevjv82dkeh7it4/72677157844.pdfIn PDF document text
    • https://pestresolution.pt/site/upload/file/lexawobizokolat.pdfIn PDF document text
    • https://bnovum.hu/downloads/kodokupujegalopi.pdfIn PDF document text
    • http://ex2010.com/uploadfile/file/2021072403465773499.pdfIn PDF document text
    • http://douzonebnf.com/upload/file///moboxuniwon.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608256556a1b3---kakenusomunizabizavetowi.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/897744250.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///tedun.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea6f44f591---22866032638.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/50814203045.pdfIn PDF document text
    • http://aptchasers.com/FCKeditor/userfiles/file/finegisugazolipa.pdfIn PDF document text
    • https://rmdschoolandcollege.com/wp-content/plugins/super-forms/uploads/php/files/p4431jdna2vp7f7vuppg66l4o7/37176366102.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16084b0c8ced1c---69086938230.pdfIn PDF document text
    • https://autohausnschmidt.de/userfiles/file/tirek.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/ebe3c02c623b4043af397bcafbbed26b/28640261148.pdfIn PDF document text
    • http://bukhatirhomes.com/userfiles/file/pezuxofukobupakigiwu.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/lozekapimowebogugerawe.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/449136b25885170432a375c34bf9a6fe/penekujazefan.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/8o32ietohh4s79jabg6qq7q236/juxupiniturufig.pdfIn PDF document text
    • http://lucann.com/Upload/file/28183246721.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dcdc8331aae---morid.pdfIn PDF document text
    • http://www.fotolia.com&#39In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=install+dbatools+manuallyPDF link annotation
    • http://www.fotolia.comIn 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_off0000ca47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e25e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25E 10392 bytes
SHA-256: ea98176a3e3e775420a96643adf709cdf31a1b5d67df2719f7f19d42e7173332
font_02_sfnt_off0000f9d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D9 16816 bytes
SHA-256: 09f2a45d246884d134d2a2db628416e1cd6882c0d24048cb8c16e3af6c7f2062

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