Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea3ea6f0c6a1724…

MALICIOUS

PDF

71.7 KB Created: 2021-08-28 09:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2769a1914a8a7a01ec8af6912d0c9700 SHA-1: 8f5b28205a44210df016e4e98902f72978bec81c SHA-256: fea3ea6f0c6a1724f50c20dc736b2c445673299e3958cd4e54e12c1adb31d40d
156 Risk Score

Malware Insights

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

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier as malicious. It contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, indicating a phishing or malware distribution attempt. The primary purpose appears to be redirecting users to malicious content via these numerous links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://pestresolution.pt/site/upload/file/78803981353.pdf In PDF document text
    • https://warungmimpishio.com/contents//files/36909745659.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc2664f0a5---61840899202.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/ee72441d7589636a24ae3e40a83f738e/vifekurovuwezulimejor.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/dulupulevapef.pdfIn PDF document text
    • http://globalbando.com/DATA/upload/files/202108131653026663.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/3d1c1720aea9d1fe79e7e9417e844422/medobopuxefitefeninarud.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8fa45bb4a---71188449165.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c74b5cfc36---zadinajenevuvawupaxepulo.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec89a890c2---44915561415.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/lazika.pdfIn PDF document text
    • http://technocom.pl/editor/file/24351842922.pdfIn PDF document text
    • http://ranch.pl/files/file/13580408383.pdfIn PDF document text
    • http://rebeccafantarchitetto.it/userfiles/files/bufalof.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba3d4db12e---42207321004.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/11792971931.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/21272503022.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072726adeb4f---xupumefejigegiso.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eca671534c8---ferematisu.pdfIn PDF document text
    • http://riskhedgetech.com/uploaded/file/25086598260e95c127d1b4.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/2f3e1f97e5c06af97efd27c67663e7ab/83100941465.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210625060944.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/49663506207.pdfIn PDF document text
    • http://devison-matras.com/upload/file/pelabikiloganozez.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=1000+pounds+in+south+african+randsPDF 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_off0000b949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB949 10716 bytes
SHA-256: 50ce87d8208bf5c17b51513e4cffcae2b2e526b51e2466f10fa6cc802f72323c
font_01_sfnt_off0000d1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 15152 bytes
SHA-256: efb03dec3cb1a9244fc69aaa7114ec1223b10884f80f8cc3fc6478fb35543286

Open this report in the interactive analyzer, or submit your own file for analysis.