Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d00797933bdf0da…

MALICIOUS

PDF

83.4 KB Created: 2021-06-29 21:23:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 48ec9ad68ceee7cf01e654a3f4822e5c SHA-1: 38d340b2304b936f109889ad83ce58e5a1484fe2 SHA-256: 0d00797933bdf0daf1696c160aacea3ee3b8e50b329644e98936a922eb9e0c82
164 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links hosted on compromised CMS upload directories, suggesting it is part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the attack pattern of luring users to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092754ba980d---kekajonuwubil.pdf In PDF document text
    • https://burgaseguros.com/userfiles/file/tuxidovukukapumagaxa.pdfIn PDF document text
    • http://mistralizmiryonetim.com/uploads/file/jisozoti.pdfIn PDF document text
    • https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/0eb9e704c5aecb7e336091e37527ba79/zafowifijefimuritizimo.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca07feee1af---lerawulumidifejoj.pdfIn PDF document text
    • https://hometeamcorp.com/images/usr/52183152338.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/vexovomugufalakiwanonus.pdfIn PDF document text
    • http://gabortech.com/admin/file/zagolamidulidafuragamarik.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/63f9f58245d7fad03412a0cfede0786e/50243958834.pdfIn PDF document text
    • https://pabrikangka.com/contents//files/purodupusem.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/7hvjop5599b5jlums8eoigk1dj/nupenorap.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609e90128853b---76998393619.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/7acd204f93fe35a3409d1fccc15b9d1f/birudatin.pdfIn PDF document text
    • http://ypdtools.com/ckfinder/images_store/files/12860905675.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5613b531d---meripa.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606fdbf8092b5---dikuziziworid.pdfIn PDF document text
    • https://genericdiabeticteststrips.com/userfiles/files/segunon.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f01adad2b3---10722442118.pdfIn PDF document text
    • http://photou.cc//ckfinder/userfiles/files/jivaluwiban.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dea4e73e52---72198874686.pdfIn PDF document text
    • http://snypes.nl/img/customer//files/57004539659.pdfIn PDF document text
    • http://indovinandoilmondo.it/themes/userfiles//files/46479542096.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/t0jj75t5fk70d2r9gminq4d61n/modexagopokumovaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=science+lesson+5+class+7PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE621 10284 bytes
SHA-256: af781c4fa5a9aa013e00c211773d90c1ab58f9a2d6fafe03f591f12bfab076da
font_01_sfnt_off0000fd70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11582 16476 bytes
SHA-256: 6b5a019a4d9ffcfa0e9cf2fee254e4c8493370dce731b2d2a1a5cc1f96d057cf

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