Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e875e2af3f6920…

MALICIOUS

PDF

82.3 KB Created: 2021-09-01 10:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f0ccfda3f717cc7ea9d2543e6c93856e SHA-1: e69a95798aca23bcf2ad3630d0184a65df6897b2 SHA-256: d6e875e2af3f692056ed1266e42413e4dedc822790f1b779f689bbd73f7cb037
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories and other disposable hosting sites. The primary goal appears to be directing users to potentially malicious or phishing content hosted on these external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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.
  • 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://gannat-ltd.com/userfiles/file/fegiki.pdf In PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1aadc2ccc---wamepelisunenoz.pdfIn PDF document text
    • https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/34314991469.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a614954af75---mukamakenoj.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/58291911594.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/97922471292.pdfIn PDF document text
    • http://psychologkmalinowska.pl/ckfinder/userfiles/files/nitasogeremov.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/nj80132s4cvc511j39nfnov7k7/jimaxorexitatos.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/83160408524.pdfIn PDF document text
    • https://nadamasristorante.it/file/55423362632.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/ecffdd3d16341cace9e187aba21d74e5/wemug.pdfIn PDF document text
    • http://maximaviajes.com/FCKfiles/file/40306909434.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/16077eff11aeab---76306665732.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/624jr2ed6cr0td5hi1fbefd5l9/57942050763.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160847748bfe9b---lanalamuf.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/popudojesolirokegilizi.pdfIn PDF document text
    • http://tecniagua.es/uploads/ckfinder/files/87531207205.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/94382310439.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/jifuraniket.pdfIn PDF document text
    • http://bajcsidavidfoto.com/_user/file/fujitajawelulowej.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/e82e84b74cf957963bbd75b00b9c954e/2685184124.pdfIn PDF document text
    • http://cy2hand.com/userfiles/56586289228.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=st+augustine+school+for+the+deaf+and+blindPDF 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_off0000d921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF138 11068 bytes
SHA-256: 7fc22b64ba54b1a405c7fdbe291b7a38100a57aefe3e6dbbcc2fcf376e7b200e
font_02_sfnt_off00010aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAD 18468 bytes
SHA-256: c14199b058b544d33599a174d0d19953027e18311e34e0a2f5c9c62c5704d569

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