Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7e2cd339394a09…

MALICIOUS

PDF

98.8 KB Created: 2021-07-22 09:48:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 037ae81055d92e4c8417637a12049927 SHA-1: 008c5aa1650b7543effd64c35a8b3bec53a9c007 SHA-256: ec7e2cd339394a09f6f9a8af7e470065545f4a7bcb8327e641c5f80b96b3cb4a
156 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to compromised WordPress sites and disposable hosting domains, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9889

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://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/555a06c9dc879c9466c116610204f7d9/kubapomit.pdf In PDF document text
    • https://99shayari.in/userfiles/files/fotiligisigolad.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/547a9a41596d02763fbb6af6dd1a5fc2/favonu.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607faa8b4ffe5---45089234700.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/24956381440.pdfIn PDF document text
    • http://mmdplus.com/userfiles/files/20210604_111636.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/xibamaxefinujod.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///xogutamubosakomiz.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077f40175cd4---99828247076.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/vo6mnk3hn9ck6idsu1ets458om/33391271313.pdfIn PDF document text
    • http://school19-zav.ru/userfiles/file/dazotagapikipoboxifax.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086022b11ab0---satekujatosupobepubub.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/fvhhkd3ckt9h0tf41el6jmsgq2/8628492908.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/63p5tlonop6ine2m43iqurm9kb/weligixoxovu.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/bipelapapemig.pdfIn PDF document text
    • http://boxerdapolenta.com/cmsimple/images/file/tafutumexirabeti.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609aeceeb65d2---ritevudefuteleribit.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/f0680e09248f233e68e26e274c31fdfc/nokijupomabizikosi.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160930910c1acb---46373951471.pdfIn PDF document text
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/k8qrukurtd2sm8bt9kndlvi5t4/mobawajumiwadufupurutopop.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/7rtg3jpdthppue4jil5ekhmgde/95048454052.pdfIn PDF document text
    • https://angkalaris.com/contents//files/gunosonupekiwut.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16088861b9d121---woditoj.pdfIn PDF document text
    • https://evpersoneli.net/ev-personeli/file/wopulitivotesediromevo.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f59748955c---9285611037.pdfIn PDF document text
    • https://xlspandoek.nl/userfiles/file/wibovezuxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=samsung+syncmaster+t220hd+manualPDF 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_off00011bd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD3 11136 bytes
SHA-256: 47ddd49fa7933b9a89ee82f16711bff705e5cfbaf4ab3249877ebce3b97227ca
font_01_sfnt_off0001358f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1358F 17556 bytes
SHA-256: b620c4b7415a8a848ead3a1c028e81f6e23c495abb40c3b1f694f5a595630e57
font_02_sfnt_off000163fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163FE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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