Malicious PDF — malware analysis report

Static analysis result for SHA-256 1842a715558285e7…

MALICIOUS

PDF

88.2 KB Created: 2021-07-02 09:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 715bc0a384b38afad7db389c098a6523 SHA-1: 0f56d3fd15150118a89636685b1e9a59a24de0ac SHA-256: 1842a715558285e73baa29ca94109a589884e16abc972d8298fb33f100778556
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is identified as a link farm, likely intended to redirect users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest it's part of a phishing campaign, potentially leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://synerhu.ru/uplcv?utm_term=where+can+you+watch+the+canelo+fight PDF link annotation
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/dbk1rl3ot0uadk4hh8il30h32g/fizemebokafinolaro.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160864e23ecd2f---18980468258.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608718fa6bf8c---kiraze.pdfIn PDF document text
    • http://beta-rc.com/upload/files/tojekapejigusun.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/xewukur.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8662e05386df6072a8b2cb38610fd1de/17732385673.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf302f0d9a---34798228588.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/91b00241a247e28522e09b82e3cefcd6/3665284812.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/7f46c15e51c22608df39d26a36a2f4b8/rivavidawelubametasibiw.pdfIn PDF document text
    • http://alexandraharris.com/clients/36054/File/badujudegewikep.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf67880a6e3---mijimaxisetesopeniwatumel.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/lomiwamo.pdfIn PDF document text
    • https://simon-daulte.com/ckfinder/userfiles/files/577403989.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/12191061527.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c591fb2fda---wuwidevuxe.pdfIn PDF document text
    • http://beijinghuojia.cn/userfiles/file/29303685116.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/ca9399001710d387798349cab6e6465d/xotusitaritelejigoge.pdfIn PDF document text
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16078e656f36df---xozawejiruw.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160d75f6e6f2a0---59449684845.pdfIn PDF document text
    • http://thegreenlegacykeepers.com/clients/e/e8/e8dc17949b7ef813e9937e453902477f/File/80714060191.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607576847458a---89962717999.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/f06cb41a0cd4e3cf3e69de14b4ef82bf/womezen.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/pofegoxexunamekuj.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098ddb5d1420---kivexosu.pdfIn PDF document text
    • 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_off0000f3a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A1 10740 bytes
SHA-256: 74c86e6d23d0cc4c4d558315f159d82dc0f2710e3351eb57d7ae37176903f2e1
font_01_sfnt_off00010c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C58 17764 bytes
SHA-256: 2916560da8cb21d834cb0e20fa7bba2c91ac145dba5389438b21cd1c725c327a
font_02_sfnt_off00013b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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