Malicious PDF — malware analysis report

Static analysis result for SHA-256 345a4479a11132fd…

MALICIOUS

PDF

84.1 KB Created: 2021-07-17 17:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 735256aed99aee1ad0135446d875a159 SHA-1: 8569f8c5212177ad2c5d4b0b3a2da9f672d88a65 SHA-256: 345a4479a11132fdb601fcf2da0a0e6da75755ad8bdc7e3f55b8801892b37814
156 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, a common technique for distributing malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure suggests the document's primary purpose is to redirect users to external, potentially harmful, URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16078fe9bc57dc---13305193379.pdf In PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1608942a4e3877---46052670869.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/d76ede3657e0f4b60cc3b3630d825c79/xotusirejusuru.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/alcha6vqo6a105tc7r5gt88ie2/85859810648.pdfIn PDF document text
    • https://myveolife.com/wp-content/plugins/super-forms/uploads/php/files/7489ddf21689819da8d2c1a1ffd2bde0/sevufis.pdfIn PDF document text
    • https://nikosdimos.gr/userfiles/file/39162161547.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2256d9b597---83274961163.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/3ad1f6bf3d3718b42bb5108d29e70562/tubesidigot.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/c7ab1c0083ee088cf4a74631c8e8ed95/sidikikepiz.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efe1e0d240---xepamejotilerigisemujur.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093d268b647a---22442904497.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/54ae3061e58b37c5af5959f7bab03868/davapuzejamoba.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/8943d7340e6cb95e759e3e3260dda524/76120222554.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f82c7a48b3---58646337998.pdfIn PDF document text
    • http://tandartsindex.nl/images/uploads/fukezujenejapan.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608926fbe8112---28031514086.pdfIn PDF document text
    • http://grossfamilyreunion.com/clients/0/00/00c8ca1d7e0432e0ca4c178cf0a97985/File/futalogeretojofaleziles.pdfIn PDF document text
    • http://1959blackshirts.com/clients/866684/File/84906019684.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/zakuvuralose.pdfIn PDF document text
    • http://bungefamily.com/clients/5233/File/55588861738.pdfIn PDF document text
    • http://kagoshimakojintaxi.com/userfiles/file/57669292289.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/5029798382.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f923f6f06a---31133773505.pdfIn PDF document text
    • http://9meclinic.com/ckfinder/userfiles/files/vuwevowapomub.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e26f9dc1a0dad92fa9630dfeea784ae5/watomilisavanotiwug.pdfIn PDF document text
    • http://www.kymkarajok.net/tiedostot/files/tilawenitasumilosowo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=creedence+have+you+ever+seen+the+rain+lyricsPDF 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_off0000e22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE22E 18816 bytes
SHA-256: 28e2d4134d7cb28dd1449dcfaf60d901e76e8a0f0743ce65a50396cfd000db41
font_01_sfnt_off00011200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11200 10780 bytes
SHA-256: 131e91f9132382301c0ce322c60ac4adf1b358a68b0baa2bd27022eb6ec629f9
font_02_sfnt_off00012acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1