Malicious PDF — malware analysis report

Static analysis result for SHA-256 5029dec96d7b789c…

MALICIOUS

PDF

89.2 KB Created: 2021-07-19 17:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: b5cd219adde292353ae35b376df58f53 SHA-1: 0a35ef74d7dbaeea8f2a33d94b7a85a532250e75 SHA-256: 5029dec96d7b789c8340560afd2aef343fcf6816c826f3598d10a760d68f3230
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous URLs pointing to compromised WordPress sites, indicating a link farm designed to lure victims. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The embedded JavaScript, while not fully analyzed due to obfuscation, is a common vector for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a026bcc580c---mimumevoromagozezid.pdf In PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160895cbd0dab4---83607902204.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3ce559fb9---5294992649.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c1cc8cfd6---voralosakera.pdfIn PDF document text
    • https://hsse.cl/files/73049819053.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/os75pblf9jcrbacl2tobnm7tur/35391286746.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/30519011954.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160768bddb59d1---xifoxetileroramawozagaj.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/3432880677.pdfIn PDF document text
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/fca6b619b0cca20f62b8eec9b1883ad8/79642464711.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/a9460374dfc2cea058240b16195f8598/37620674202.pdfIn PDF document text
    • http://www.ks-zahnarztpraxis.de/upload/files/12513866437.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6db12d72f---sukadevepilipowapebo.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160885bed4c6d1---mutafunave.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/f36654090df11a3680bc41246e609a68/26610438750.pdfIn PDF document text
    • https://llsindia.in/FCKeditor/file/mobujapukigo.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607785848f267---33108881630.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d795e4443c---wesulegofitewokokopidol.pdfIn PDF document text
    • https://bonacorsi.it/file/fabariwogujubemufofukuk.pdfIn PDF document text
    • https://triosms.com/userfiles/file/zozubekakejukevinusek.pdfIn PDF document text
    • http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210605093038869796ijadpt.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=age+of+empires+2+pc+game+free+download+full+versionPDF 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_off0000f5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B6 18200 bytes
SHA-256: 427c929d7e2f8292b4e6398a336588f0d6d4b821b066fb2205137576c154f656
font_01_sfnt_off000124ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D16 11216 bytes
SHA-256: 76f69f8f0aa4b5d66d04e9f49447ab6ea3327a233499f7a5cb86d38f5c51f931

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