Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d61ed19d34d50b…

MALICIOUS

PDF

75.1 KB Created: 2021-09-17 15:59:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 8650c06d3be6ab2580b852dfddadffd5 SHA-1: 1be2eddc5acd4cfd69f2c230d562b224dee0e0e6 SHA-256: e9d61ed19d34d50b6e2789752e1ac50e98b66c45ebf6cd459568845dfae05004
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lure victims to malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 http://mpwlawpa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zolividevixokomoke.pdf In PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1613cb8fa386ff---xetimuzepigizinapob.pdfIn PDF document text
    • https://loffoxfitness.mvwebsolution.com/userfiles/files/63159166622.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139bf1033910---sajedefab.pdfIn PDF document text
    • http://thevisionkharj.com/userfiles/files/64292724438.pdfIn PDF document text
    • http://moto-bike.pl/userfiles/file/kolezupegupuwaluxogi.pdfIn PDF document text
    • https://suavitinhtannha.net/upload/files/13869480044.pdfIn PDF document text
    • http://giteduguedesboires.fr/userfiles/file/90587859619.pdfIn PDF document text
    • http://streathamtaxi.com/survey/userfiles/files/10614333715.pdfIn PDF document text
    • http://tecs4.com/intranet/ckfinder/userfiles/files/pazefu.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/leclnj60o4u6qgmjkbv3agsmdq/fasewaxalanamewageketu.pdfIn PDF document text
    • https://pointswestliving.com/ckfinder/userfiles/files/nidiwovoneje.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/j27d17hptpdpo4t4c6jsip00u7/nutefadiwow.pdfIn PDF document text
    • https://kontiko.com/ktkweb3/images/upload/files/jutogurizisumasukuwosu.pdfIn PDF document text
    • http://umartravel.com/files/54247017888.pdfIn PDF document text
    • http://bakoca.hu/files/file/tejidomemuxi.pdfIn PDF document text
    • http://doks-films.com/pcms/content/file/51543476428.pdfIn PDF document text
    • http://goghepcacloai.com/media/ftp/file/76167499854.pdfIn PDF document text
    • https://myclubowners.com/userfiles/files/34501811830.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/jemikefa.pdfIn PDF document text
    • http://sriraghavendratemple.com/ckfinder/userfiles/files/79385871496.pdfIn PDF document text
    • https://augsburger-dartliga.de/uploads/file/roxusujakamite.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/jaweloso.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/fodazedizusu.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/ce3f615f1a06d1ea7b66a30ab0d56fa0/55064979907.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=enable+vpn+in+chrome+androidPDF 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_off0000c0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B5 10700 bytes
SHA-256: f15af0bf4a1c7d836119d24d9ac59b06c25f5fd187a43cd5d92102d89a3a2541
font_01_sfnt_off0000d8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BF 17936 bytes
SHA-256: 69c76f5802b20423bbb2f8da894ba09d7378029df283c0ed2b6b20181b226049
font_02_sfnt_off00010660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10660 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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