Malicious PDF — malware analysis report

Static analysis result for SHA-256 64231b6344868d84…

MALICIOUS

PDF

81.2 KB Created: 2021-09-04 21:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a7ac8a5191d17c8ace712ad9364b5ed3 SHA-1: ad6609f466e7d3955d33fa54a1fca97b8b984dcb SHA-256: 64231b6344868d84aec04d979df4b9b6c79990853ba4452fdfb7fa2a7b86390f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised websites, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of link farms on compromised CMS uploads indicates a pattern of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/f4a3bressgpqotgosupa2l7tpq/sojajevadebalatu.pdf In PDF document text
    • http://frappsreagent.com/upload/files/80600137323.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c0f3dd8624---wubedujuxip.pdfIn PDF document text
    • http://ibtaker.ps/userfiles/file/5958480945.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adba1772895---83705036613.pdfIn PDF document text
    • http://ldbell1965.net/clients/85689/File/toxiwipomekuvodonevom.pdfIn PDF document text
    • http://www.rpv-drachten.nl/files/file/xulejepomesewoxefebi.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef2a5c20f3---17043292564.pdfIn PDF document text
    • https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e2ad8a16334---jubufato.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/2021621620337821.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/9998d6130665e87394a3540382dbc434/buworiwo.pdfIn PDF document text
    • https://tectrongim.com/uploads/file/13342935875.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/sajuwavidenawe.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/p50qv3756e37eve97cnuugolee/87781816261.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0684c9b328---nevofuve.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1622875595.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/7e0309277cfe4f4af38ee75468d37d90/nirorokivasasafeluniwalar.pdfIn PDF document text
    • http://gpp300.fr/userfiles/file/megumupufevesexufoj.pdfIn PDF document text
    • https://tatvan.in/userfiles/file/38846324589.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/petolibino.pdfIn PDF document text
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b868f1b6d33---25425068016.pdfIn PDF document text
    • http://www.kymkarajok.net/tiedostot/files/zojegapusokazidatosamofu.pdfIn PDF document text
    • http://xn--80aafjbawrcdgsodbdciig4a5v.xn--p1ai/pict/file/95751155269.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=moot+court+pdf+free+downloadPDF 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_off0000d8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 10532 bytes
SHA-256: 85a464080e1a2955e036f895dc76897e3a4487fb36ac79bd56d23deca72bb2e7
font_02_sfnt_off00010947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10947 17616 bytes
SHA-256: 09826c921f8cc82181d6741c3f8294d30a032afe17e1baca3ba79807b1200c58

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