Malicious PDF — malware analysis report

Static analysis result for SHA-256 e422610455614874…

MALICIOUS

PDF

92.9 KB Created: 2021-07-06 23:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6c2cd73d4518d9f318e3676e4781cfc2 SHA-1: de9bc8a22b0b767eadbe892fe36241aef8291042 SHA-256: e4226104556148747e23eee2b6e1bf812b9f1647bea6eab8b6ae552c2ab531c7
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, which is often used to exploit PDF vulnerabilities or redirect users to malicious sites. The numerous external URIs, many pointing to compromised WordPress sites or disposable hosting, indicate a link farm designed to distribute phishing or malware payloads. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

Heuristics 7

  • 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.
  • 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://garglob.ru/uplcv?utm_term=excel+e+exponential PDF link annotation
    • http://suncitygroup.ir/basefile/suncitygroupir/files/jabev.pdfIn PDF document text
    • https://senhewood.com/d/files/48282708935.pdfIn PDF document text
    • https://seeandhearbetter.ie/img/shop//contents/suwera.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f3f53b9ce---85075247162.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bef6a62573d---wefukire.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/zaminivotulavisimibedu.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/0f111c41db3557f93e2aad377d7b1437/dovulajuwixivuba.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/18496a66299189550906deb5d9d14c58/23248964567.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609c3e9497224---pewojedufixekagoxepobo.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/a66527c75e54b58bf226e76d624e14a0/89825124656.pdfIn PDF document text
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/4fb9f114da982504d4e81b1ecc6c14bc/77253009958.pdfIn PDF document text
    • http://viacaosaopedro.com/www/js/ckfinder/userfiles/files/69412934497.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a2abcd64a47---giluwovefaxabirana.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1607d519fa0804---tusuxijixovusexarusid.pdfIn PDF document text
    • https://grupahatak.pl/admin/_fck_files/file/ligewoma.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/5d5b6dd7f2bcad48bc74f5c6c7e3746b/11071443991.pdfIn PDF document text
    • http://quimis.net/js/ckfinder/userfiles/files/segevolixeba.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c67e2b9514---gadodosajadaje.pdfIn PDF document text
    • https://hospvetcentral.pt/site/upload/file/27886631700.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/sipido.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/705c48f020e407d6235448506d73be55/xamopijixoka.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/d40e0c82183a4d294c868d0682557aa0/88087043981.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/xevuvoludazaxewetetuv.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/117c9e2231eb342f258697283ca57f66/kujijiritikikusiw.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/38991278016.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#Referenced by PDF JavaScript
    • http://purl.org/dc/elements/1.1/Referenced by PDF JavaScript
    • http://ns.adobe.com/pdf/1.3/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/mm/Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/rights/Referenced by PDF JavaScript
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB40 10184 bytes
SHA-256: db794200e3eec7f09b4e26c28c125d16fe8f52ef3ea1f5ab70d4a2b663e86f4b
font_01_sfnt_off0001022e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022E 16236 bytes
SHA-256: 9f9c9255c0426c77c5b13ef22f4242f4f7095bfd8ba808a20cf1712cd58ffb40
font_02_sfnt_off000117c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117C4 19584 bytes
SHA-256: a85225a352e6bd841fd9a1fd46c72af3d41cb34759c9d55d02ec60f7b2ba2f25
font_03_sfnt_off00014c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C19 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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