Malicious PDF — malware analysis report

Static analysis result for SHA-256 698d12fca6265647…

MALICIOUS

PDF

89.8 KB Created: 2021-07-01 12:13:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 44c1357e69a9350ee8d66ce082c1b35b SHA-1: 710b9caae95003e2ae8a22c439ec92c7420cf646 SHA-256: 698d12fca6265647a45427ddf789f71b86c77e5ce2e1b6eaecba8427bd2e2495
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV and an ML classifier. It functions as a link farm, presenting multiple URLs that point to potentially compromised WordPress upload directories. These links are designed to redirect users, likely to phishing pages or to download further malicious content. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160dd8551abdc5---74243987081.pdf In PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/7djhqdima964hbp85b9koktarc/tibuxigaxojefe.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/4b9960c59b4c9945605bd6cfee6c5738/doratigijaberunotesen.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607f133634785---5238993565.pdfIn PDF document text
    • http://twothirdsmajority.us/clients/38522/File/meveramalixibufotulenoso.pdfIn PDF document text
    • http://sieuthivatlieuhoanthien.com/upload/files/mokisifonujixikobelerim.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/359fa7f442975d519ba7caa4e68b7d8b/remepepafuredasowim.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/8t8chtb0jm88r60vslp1vhi1pv/vapuxuxabexu.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/dilofod.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/d7j0k0mrnu4r2dkenbfbspisvf/retaza.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3cfa44f73---259898206.pdfIn PDF document text
    • http://travellightnepal.com/userfiles/file/93024658097.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2dd202700c---tulipudujozumagikojotow.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/ighlk2njdb75qi60b977pi9n50/5600056136.pdfIn PDF document text
    • https://uleiuri.ro/userfiles/file/kulefutuwajukumosigu.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/0cafc146bbddf0a34a1ef97ac15b352b/97155920615.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/rifalaporiwevu.pdfIn PDF document text
    • https://wildarium.com/ckfinder/userfiles/files/sakolaxiwufodefodoja.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/vederakogevej.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/a647e52cfe8f95bf59b2eb427bc61749/1559831358.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/jilefagebivubuvarunonotes.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/37456792620.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/03af027f100c82d945a4c44e8b2ef92c/26890969589.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=a+mother+in+mannville+answersPDF 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_off0000fd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11533 17364 bytes
SHA-256: 4f7289a51ee99c8a917448db4fd7c3cb438b14c9df979d6539998f7afb17fd0c
font_02_sfnt_off0001428a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1428A 10508 bytes
SHA-256: 47a7b6c6f7428a700ff991e9b30d974575123cb0b898a245f46fb4d9cfabcd82