Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c926e96f81a5e3…

MALICIOUS

PDF

81.9 KB Created: 2021-09-07 14:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3c426d98748b810b168bda684e6ea578 SHA-1: 3e17776713818db5faf88a2719066f1ff65e472d SHA-256: b0c926e96f81a5e3b66a8f80e358ff8b954a64b766ecfbd9c2884a64d77297b4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of creating numerous links on disposable domains, suggesting an attempt to manipulate search engine results or distribute malicious content. The embedded JavaScript likely facilitates the redirection to these malicious sites, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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.
  • 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 https://pixomot.ru/uplcv?utm_term=challenges+to+democracy+class+10+notes+pdf+download PDF link annotation
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/86910c7d9c844751ca664348acc5c3d0/7081902684.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e1a46d541---jisazijuvolunujuwina.pdfIn PDF document text
    • http://oaklandscreche.ie/userfiles/files/37227906016.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/46594961379.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1608072c18d4b6---44481015609.pdfIn PDF document text
    • http://clinicaveterinariailmarzocco.it/userfiles/files/6209726488.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/93858866459.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/36134838883.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/4jl4an782q72q77afuhfgf8b75/72742396029.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160900ebfb8e8d---xomujejijamoso.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/nafuvap.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/vabesiwelenipesipaxefu.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ede461a454b88de4aa5ea12e83a2b395/35641576592.pdfIn PDF document text
    • https://iphastkala.com/userfiles/file/32958556039.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b281b418d---11839130631.pdfIn PDF document text
    • http://autoscuolecasetta.it/userfiles/files/maxejejaxunaxak.pdfIn PDF document text
    • http://potya.com/77082108446.pdfIn PDF document text
    • http://allprintusa.com/admin/images/file/75156027795.pdfIn PDF document text
    • http://zjhywt.com/images/upload/File/43146806602.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/adf629488441a22dca1a0b01c4b2a1d4/67276069333.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c7ed24989---zugumuleve.pdfIn PDF document text
    • https://mediacentre.aerlingus.com/js/ckfinder/userfiles/files/19371691996.pdfIn PDF document text
    • 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_off0000dcfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFE 11380 bytes
SHA-256: af89f84aef7355b90ecb69cba8e0070d398d55762d718b367376df1098bdec2c
font_01_sfnt_off0000f792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF792 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA4 16440 bytes
SHA-256: 834be0263b48083ddab54e0c7738ca552b76d38d2de7c02b0bc1c4dd63506c4b

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