Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c55c6f871e5dcd…

MALICIOUS

PDF

75.8 KB Created: 2021-09-03 08:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 68128b74e4b0b82576f9f5a939fb73b2 SHA-1: 5e50684d82e337dffb43fb1b2e40d676e40965c7 SHA-256: 25c55c6f871e5dcd27c6653f42a6a74631441d02dab6a8e8e46df33a7113a007
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised websites, including those using WordPress upload storage, suggesting a phishing or malware distribution scheme. The file's structure and embedded links indicate it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072cef61b503---3023297004.pdf In PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085dd8cc9bfd---boxozivovoxemiwes.pdfIn PDF document text
    • http://bagumul.com/file_upload/spaw_upload/file/20210806034340.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/16071590f3767c---wodokakunet.pdfIn PDF document text
    • https://hgb.se/filer/file/jujivirelibenugetaxiw.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/9765183495.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///nokorobozezabisowosuluvaj.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16097641691299---74560290271.pdfIn PDF document text
    • http://geoass.eu/userfiles/files/68868009299.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/kutogiviwoxuzedowizibiwu.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/50382676338.pdfIn PDF document text
    • http://www.prctech-th.com/ckfinder/userfiles/files/xujefafimezumipu.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/0c7de389a48c9212bef42b5f49e3371a/18824311065.pdfIn PDF document text
    • https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160bcaa3e98377---burufinopadejebebu.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ae8b0108b---welemaguzope.pdfIn PDF document text
    • http://viral-list-machine.com/ckfinder/userfiles/publics/files/duwaxikepoj.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/68432415484.pdfIn PDF document text
    • https://alubiasdetolosa.com/files/galeria/files/38799549516.pdfIn PDF document text
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/fet9v2ipnoai4jo7qk23t62rd7/44744570093.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/h6qmd6ju80aelgf47co0o48kue/taroturavifupikolebemon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=conforto+termico+em+residencias+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_off0000c4aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AA 10768 bytes
SHA-256: ff7c9f3ac1d9a667d435f21d1ef5e7b8f421277321ff48165cede07457a0a6a7
font_01_sfnt_off0000dd81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD81 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF593 17068 bytes
SHA-256: b58e5c836ebfe2a6c672d48e7ccfe358ef989283b195d2bc47b74fa6a75a93f7

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