Malicious PDF — malware analysis report

Static analysis result for SHA-256 da212ba796dc1e8e…

MALICIOUS

PDF

89.5 KB Created: 2021-07-31 11:13:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: e01a272b8d4db8ba3bbf0b88372971ed SHA-1: e9f4ea0583f195a8f1abf1446b7c68081b6fedde SHA-256: da212ba796dc1e8e3361d22a1ad25d5b5deef8cfd3d22bca4023c418bc7200b8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and link farm indicate an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://www.weldcor.ca/public/ckfinder/userfiles/files/56165655488.pdf In PDF document text
    • http://wagnerfamilyreunion.com/clients/866685/File/52974379195.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/15932284520.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/50ef19926a848cbef42ff13685db3f4e/10583696970.pdfIn PDF document text
    • https://aneri12.eu/res/file/lepawevamanivimatozef.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/54082afc3203a9c20d7f35b2f93e9248/bewuvav.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/zaxidakazipoziwad.pdfIn PDF document text
    • http://stpatricksreunion.com/clients/84553/File/kemonewarajevujoji.pdfIn PDF document text
    • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/3e62993593c158403d15cdbacdbaf3ac/toser.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/67753017982.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160dd63c6a9fd2---kotajafemipawadaxukosala.pdfIn PDF document text
    • http://kalmi.ru/upfiles/files/764763024.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/39655362913.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/77640177744.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/tbrago7ctkgs0iutkt1ur984rj/74600070375.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a36e265cd46---42042538940.pdfIn PDF document text
    • http://auapp.ch/userfiles/files/vekezimem.pdfIn PDF document text
    • https://doctornhospital.com/banglanews24/editorsfiles/files/toroverujazosijezo.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/1esatrvplbkc1ic2f7tu55tlj0/8785937654.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/6l9pd3nplc1k0hopho7djdjgc1/67149013075.pdfIn PDF document text
    • http://duda-tech.pl/dudatech/upload/file/davujifudisejobitojenir.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d54506f2be4---gememi.pdfIn PDF document text
    • http://dahchen.tw/userfiles/files/gosipobisefadivivo.pdfIn PDF document text
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/dkn8uo0bml7b5e2bsaj79tibkh/gazama.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=who+is+echo+greek+mythologyPDF 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_off0000fa3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11252 10612 bytes
SHA-256: 061f5a94eb6bed7eeb771772fef27c8c11389c559d4970a665fa49293b1cb85a
font_02_sfnt_off00012aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AAB 17688 bytes
SHA-256: 84aa85000ab9ccd221e9430791509027f14336d534110c6cfaaecdbad83c173b

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