Malicious PDF — malware analysis report

Static analysis result for SHA-256 adb00d43e76f85bd…

MALICIOUS

PDF

95.8 KB Created: 2021-06-25 14:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ebb3811ed80ba7862a9a74093bca19f0 SHA-1: ddb4522dd96580b00eeb71a8acde3a9239f5d892 SHA-256: adb00d43e76f85bd271ac4f92bc8df229258a7dc5108d8b754b59720d2f2fcc8
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, with numerous embedded URLs pointing to compromised websites, likely intended to lure users into downloading further malware or submitting sensitive information. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae266bc36aa---kolan.pdf In PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/8af88dcece57a58b4fda1d8e392387f8/kasetimirupaxuj.pdfIn PDF document text
    • https://fruzsiflame.hu/userfiles/file/23802125876.pdfIn PDF document text
    • https://hobbes-group.com/upload/files/88530990693.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-6/file/jadesimisinaxumiz.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160af0cebc8f82---ririfapubirefogumonoku.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/gumafaxu.pdfIn PDF document text
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/62919189641.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af78a76875a---pebovekoxoporiwufipojige.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/a970692ebf9ab913defe76da7a89f785/resutidalufedifi.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a8714d2a4a9---palonalefiriwuvateludim.pdfIn PDF document text
    • http://cy2hand.com/userfiles/4842253764.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/76500868665.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16073339fdae10---gizetodisefo.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/jutazojaduwejuvixasobenoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=top+5+container+shipping+companies+in+the+worldPDF 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_off00010fe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000127fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127FA 11144 bytes
SHA-256: 31b413601f13db6fed7a37df981509f3e6da42b7789ecbc7c2f0557d8fb7f529
font_02_sfnt_off000141bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141BB 18076 bytes
SHA-256: 468c768c14f059eff36c9b0bb70a68cf769700f69a4981fe3d71596563359c81

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