Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ea7fa5febbc3af…

MALICIOUS

PDF

73.0 KB Created: 2021-09-02 04:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5ca6acbb6f23a7565185c1f0cf084717 SHA-1: 73802f7afb9f9d8ec8153800f1baf235ba35e995 SHA-256: 02ea7fa5febbc3aff31b0f593839879fcfbd7e8ecf0aac27eb7171a62578a286
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. It contains a link farm with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and a link farm heuristic indicates a strong likelihood of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://assistance.uz/images/shared/file/81000745621.pdf In PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7b1c75ad3---teraxokar.pdfIn PDF document text
    • http://to-tuong.com/media/ckfinder/files/mufisulejijazore.pdfIn PDF document text
    • https://msvadba.ru/files/file/dewel.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/b5f7a5dfd2786a9747daebe49dc65c1f/larafopijetizuwupamida.pdfIn PDF document text
    • http://greathorserider.com/ckfinder/userfiles/files/sofebevu.pdfIn PDF document text
    • http://armanetti.com/images/31412185439.pdfIn PDF document text
    • http://kiuruvedenlukio.fi/tiedostot/file/33423277204.pdfIn PDF document text
    • http://onlinetradeshow.ir/uploads/files/xibon.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092cdf78d035---4270579166.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083fb63aaab6---23130121133.pdfIn PDF document text
    • http://forglory.cz/ckfinder/userfiles/files/relurumalevud.pdfIn PDF document text
    • https://arenda1s.ru/wp-content/plugins/super-forms/uploads/php/files/c26561b37951a22630d2a1e7ef8c3ffc/27669378824.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/wujagavabogofeminefow.pdfIn PDF document text
    • http://nofatrans-int.com/userfiles/file/lemuwena.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/sakexikugerajipapino.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16072f32761f90---14276579011.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/sotirokuvuf.pdfIn PDF document text
    • https://kolorubursztynu.kolorubursztynu.pl/web/uploads/files/denebizexakizigusovotiki.pdfIn PDF document text
    • http://ahs1978hounds.com/clients/0/09/09313dc2b2b2138818c22350edca9cf7/File/pivomivituwinovosuwasu.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/d83fd04f26e491672c7fae0ab8f8d81b/nazijimorodapusafokif.pdfIn PDF document text
    • http://szyldkj.com/luodan/images/userfiles/file/8211997295.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/61b920e1828e501511483235251ea341/repugoxur.pdfIn PDF document text
    • http://hotelclinton.it/userfiles/files/72182613910.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c641486816e---nolawevukege.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=world+infection+mapPDF 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_off0000bcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFC 15892 bytes
SHA-256: 404ef043efbd3bb9db0d0fecd5a5ff06a7fbb530bf2dbec2b83702571388b45a
font_01_sfnt_off0000e59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59F 10608 bytes
SHA-256: 11dc7cf60e91dd06d41f69bff702dc0e2cfdd082207d7a049ae022b190b26055
font_02_sfnt_off0000fdcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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