Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e563f70b18d7a6…

MALICIOUS

PDF

76.2 KB Created: 2021-09-06 14:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: be4998c4195abcb44fee0bdb291615bb SHA-1: 04b73e6380a9ce626103a782e81b0da0862f5a3a SHA-256: b2e563f70b18d7a6b7f9a703350ee11165aac1c1d21d6ae1a7f0e289007ab057
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to download and execute further malicious content. The presence of heuristics like 'SE_INVOICE_LURE' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a phishing or scam attempt, likely using the embedded JavaScript to facilitate the download of a secondary payload from one of the listed URLs. The ClamAV detection further confirms its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9827

Heuristics 8

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a88398fac---50352769050.pdf In PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160895ef71bbad---liximilisusowin.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/81799440418.pdfIn PDF document text
    • http://machi-tomo.xyz/js/ckfinder/userfiles/files/714275953.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607887bb9ba43---gewusot.pdfIn PDF document text
    • http://status.cz/UserFiles/File/semekefatiberak.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611af9e06075e---88635866020.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/4dbe511e220cac3f0eebda0042e26ec4/zeverag.pdfIn PDF document text
    • http://ceramvetro.net/userfiles/file/dujesurademuzebuxevidu.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098356ed261f---89602499027.pdfIn PDF document text
    • https://wecareu.net/ckfinder/userfiles/files/86734302212.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/444if7icjr6pjpbrc2auc0lrj5/volaroxutetagimo.pdfIn PDF document text
    • http://elazentrale.de/images/uploaded/file/39791678702.pdfIn PDF document text
    • http://sevenseahotel.com/uploads/images/files/perijutumageta.pdfIn PDF document text
    • https://dintek.eu/uploads/file/85110452683.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0b056a2f5---71851538397.pdfIn PDF document text
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/d0bd38eb44a907c498890470cfe5a218/fizanafusexonaputuriwij.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d36ca4f3f6---xixilaxikasege.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/ot7n9tmb2l48i2hen9c76ibahh/37306875013.pdfIn PDF document text
    • https://bakwanudang.com/contents//files/banuna.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a0cffac9f3---kabikudiroxef.pdfIn PDF document text
    • http://packamate.com/userfiles/jewoboxanafetopujajasitut.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ed68667f1---11294131487.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/78663329885.pdfIn PDF document text
    • https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a4945c1aef7d281c4414be7aec492f54/nonerinesinufowilisi.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/tesuwakuleni.pdfIn PDF document text
    • https://audit-advisers.com/userfiles/file/nemuzipibiloduge.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=ambiguous+case+practice+worksheetPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dd0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0C 11068 bytes
SHA-256: 16d43e0a98557c909a2b2731d71cff6d3db05880e52bbe9448ee9727f97c84b1
font_02_sfnt_off0000f6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 17232 bytes
SHA-256: 9d30a95552a21e40788330dab990ca64f235e036b4ae47dbf5317761706a5738

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