Malicious PDF — malware analysis report

Static analysis result for SHA-256 edeaad2ab7288e12…

MALICIOUS

PDF

83.5 KB Created: 2021-09-05 14:04:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: d8325f8fd18b7ed914a8ecd27155c201 SHA-1: fc35cf2e80e29bf77ab5f0d2857217e5877e70cd SHA-256: edeaad2ab7288e122c4050fb8c4d60f6b2ce22704c18be932d805d8785d8a690
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links pointing to potentially compromised websites, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of a link farm attack pattern, likely aiming to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/s2reta4i644auiq1cn03r7lvea/wugibemuxevog.pdf In PDF document text
    • https://www.iieng.org/editor/ckfinder/userfiles/files/75935004224.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843b07b23a6---gunotepepitutili.pdfIn PDF document text
    • https://poldercuptrofee.nl/site/admin/ckfinder/userfilesfiles/godanikomibufazuremexoz.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/31056951958.pdfIn PDF document text
    • http://tksvolga.ru/userfiles/file/17450062117.pdfIn PDF document text
    • http://portalkucharski.pl/app/webroot/media/files/mumunilowogixo.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/xazoruzaguw.pdfIn PDF document text
    • http://klimagra.pl/images/wysiwyg_img/file/nozubizafopekizevuvabatat.pdfIn PDF document text
    • http://cbwmd.com/uploads/Files/10821838943.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/nimabukojetolosilike.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/ukks5rb0vrd0ofhbdvhmdhmjl4/fodaxowirupibuguditep.pdfIn PDF document text
    • http://propellerclubsandiego.org/uploads/files/74868988040.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/37838594056.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba7eb40736---89419342931.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/ec3dufvslilp4u33pcnenm18vt/pofimituvupuvazoramarerip.pdfIn PDF document text
    • http://biosafety.biz/ckfinder/userfiles/files/ragaxubudinonilunu.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1609a5845f0d45---jukasadikezatudekolede.pdfIn PDF document text
    • http://nirmalapublicschoolerumely.com/userfiles/file/bosoronerirozovuramadima.pdfIn PDF document text
    • http://infracsap.hu/files/file/getovuxalitadola.pdfIn PDF document text
    • https://chambres-a-la-ferme-plouzelambre.fr/userfiles/file/94446675362.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef79fdc70f---50131361114.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/n9u039pv1skulf4rrea7dd0p0s/21125111595.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/160982b9682b10---wunifovetoxuzosino.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=png+police+application+form+2019+pdfPDF 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_off0000e0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D0 11256 bytes
SHA-256: fd87b09724c42e909b1ae1fd4094b636438728131846538f48c4e78b61f758bc
font_01_sfnt_off0000fb0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB0C 17552 bytes
SHA-256: 90d232545350ef509c90f89054be8a5c6056510142cfe4bdfe3659e62f0063f4
font_02_sfnt_off000127bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1