Malicious PDF — malware analysis report

Static analysis result for SHA-256 68027e93794373d5…

MALICIOUS

PDF

99.1 KB Created: 2021-07-13 18:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 01d53cc38dc0703afbb5e4b404503f73 SHA-1: 56437de56c0bd3d682d9349d1d746f8e9b086f59 SHA-256: 68027e93794373d5ce5dea5ba886d42ca55db2b6f84cd2c6fb28922364687005
176 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. It contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The document body is unreadable, but the heuristics strongly suggest a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9374

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f595955e61---waxede.pdf In PDF document text
    • https://inncredel.com/uploads/60309727115.pdfIn PDF document text
    • https://emauto.lv/index/images/up/file/60693082214.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/m1dv3lh8me76s6knqa6ul2d25v/84349535704.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160857eb83367c---20972042408.pdfIn PDF document text
    • http://beulahcooleycollection.com/clients/870349/File/63591362780.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c19eba5ff02---47269158683.pdfIn PDF document text
    • https://dolmalatrek.com/userfiles/file/sixureli.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/eh1gkipbq4mt8gvt5n55mg2d0l/zozuliwujapis.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f215030291---jupedewogajovetikir.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/3020174245.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1609659dae71b9---toseva.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/11470492578.pdfIn PDF document text
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/afe23362f5bc302e4ddaea2c9827dda8/lebimesiludef.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/e024ba3d3ec36c12300c8c8ef7e392a2/5053251747.pdfIn PDF document text
    • http://altiro.nl/home/tjerk/file/digagi.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d868d778cf---tonuwikelavopo.pdfIn PDF document text
    • https://italvaping.com/file/pipoxowunawavoso.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/42070617486.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/xaxumotomorogobo.pdfIn PDF document text
    • https://ecoretras.com/file/74033460334.pdfIn PDF document text
    • https://nhadatonline24h.com/Images_upload/files/joganasawivigunudojegi.pdfIn PDF document text
    • http://www.jamesbgriffinlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a35cc6e7a---92355766238.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/21abe3ff1950b976cd77349ef01aee04/64014015102.pdfIn PDF document text
    • http://tulsamemorialclassof71.com/clients/84987/File/joxoxuwekesikeruzava.pdfIn PDF document text
    • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/patnuf8n7bfucdqaou4rtr54rj/11625077995.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=consequences+meaning+in+englishPDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00011d80.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11D80 19576 bytes
SHA-256: dac735ec4a20eaf71bc7766f3faf1144de4a52e73281c2c59ea4f1e948e7b203
font_00_sfnt_off0000ddaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDAA 26552 bytes
SHA-256: 9390930393ddca9bab0dc1a9623e5a11e532aca1a322806f355c2fe87d0410fd
font_02_sfnt_off00013ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001570d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1570D 10756 bytes
SHA-256: b717fdb23717f785640a9d98758e110dd8ddee65a9af2f0032030e780b585275
font_04_sfnt_off00016f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F3E 3900 bytes
SHA-256: bd58d0e9624a21adf8cbde6f3065d019c43fc084e774e0d6317a201717fbdba8

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