Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e6d7c4128a7893…

MALICIOUS

PDF

201.7 KB Created: 2021-07-14 01:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: b3c61c95ed039f4b136290eb6daed412 SHA-1: 43a7333d79c2f3fe32a833a7aabc66ff156a86b5 SHA-256: e1e6d7c4128a7893325f9efa2ccb322270c19c5aa2db8b4c6d5501f6c41e372a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised WordPress sites, suggesting an attempt to host and distribute further malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 5

  • 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.
  • 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 http://artecgroupservices.com/imagenes/file/28624791780.pdf In PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5ad614e0f---96222441016.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/c8adadcac94dbd293ad86f07f91b948c/30622624222.pdfIn PDF document text
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd835bb081---fisite.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/83514215393.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021062123112342.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/c58fe5c636cd8990e14dee5c6bc1d108/gekovizakezisiwe.pdfIn PDF document text
    • https://kawanmto.net/contents//files/78405099724.pdfIn PDF document text
    • http://hogan1973.com/clients/d/d4/d4eda5e2427b34f3a15374adde9a77da/File/25453389031.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a16ecd624f2---11836765482.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/1ln7vss42g71iqg0h7lu96j615/9253780271.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a47beed670b---75784420963.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607207c43e6f9---97623681275.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/67cba4f46318d09e0b050b7701380c15/sesulifobewod.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/76270805ae7be93505ee9d9df1157b2e/25315315405.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/6721d82a66847daeb9ab844f0501ba5c/36784674689.pdfIn PDF document text
    • https://rkdestate.com/userfiles/file/jimurusasakim.pdfIn PDF document text
    • https://shriayurvednagpur.org/public/ckfinder/userfiles/files/meweparojifivo.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210508124630.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ebe9f611e1---16628959939.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f762cba422---63962759590.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ccfc4c5b9f9---vipaxekewowurura.pdfIn PDF document text
    • http://d4squebec.com/clients/f/f5/f58105ca183540932673f5bf18e62671/File/78526032685.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/retokenenadedi.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a341837d22a---79975029666.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=words+with+f+in+the+middlePDF 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_off0002b83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B83E 10536 bytes
SHA-256: 198a4c0ef17c645b882c17e1cc043f71f1c8b7ed36356624332a62c3c5a01f2b
font_01_sfnt_off0002d00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D00F 18916 bytes
SHA-256: 89e25e9149714a24cd2e7154296eeefdd84d383f6a08e717a6675023c68b8d4f
font_02_sfnt_off00030082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30082 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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