Malicious PDF — malware analysis report

Static analysis result for SHA-256 86230014d5b25e07…

MALICIOUS

PDF

68.2 KB Created: 2021-09-28 05:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e329ef673a1a7ddcc537f313d0ea8650 SHA-1: 1402d84d0adb77126a4d9f296865fd6d8ff75ee7 SHA-256: 86230014d5b25e077477246c4e5c93a32aff64a4f2cdc5f7e847aaf2205ba804
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. The heuristics identified it as a link farm on disposable hosting, containing numerous embedded URLs pointing to PDF files. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://immodraft.nrw/images/architekten_agentur_images_/file/5735007701.pdf In PDF document text
    • https://ozmutludokum.com/userfiles/file/vegawotojubab.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/73678945541.pdfIn PDF document text
    • http://travelport.pl/userfiles/file/gezeravorikeganozen.pdfIn PDF document text
    • https://xosobacninh.vn/webroot/img/files/rorutigipujefojanog.pdfIn PDF document text
    • http://irfanmakina.com/depo/sayfaresim/file/pudedinizonarupef.pdfIn PDF document text
    • https://rosettes.it/userfiles/file/38628778448.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/79691914559.pdfIn PDF document text
    • https://carcarnet.com/home/sandbox/domains/hkdance.tritek.hk/public_html/ckfinder/userfiles/files/98427623274.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/9d83193995d0bc8ccc55d29651a5d2be/wajasidawevadut.pdfIn PDF document text
    • http://thuocamakong.net/userfiles/image/file/74482190036.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/5568156157.pdfIn PDF document text
    • https://27061010.com/uploads/files/202109050036463164.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/lazinajuxagukikafidiwu.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/b8e0d7384cb919f392c53822a880f468/89905141315.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/63543061258.pdfIn PDF document text
    • http://jtylek.pl/Upload/file/28821862876.pdfIn PDF document text
    • http://xn--80aer5aza.xn--19-kmcm3c.xn--p1ai/ckfinder/userfiles/files/53776825901.pdfIn PDF document text
    • http://uforoi.com/app/webroot/uploads/files/xomalidiwug.pdfIn PDF document text
    • https://liftsystems.ro/LiftFiles/file/gagofoguvivetabekab.pdfIn PDF document text
    • http://cargologicru.com/sadm_files/togisuwisufaluvig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=pokemon+black+2+pc+downloadPDF 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_off0000acab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACAB 10656 bytes
SHA-256: 87db3c3f4fa05ace34dcd0f8c22c58ec7cc6b1bc4fda65b245d48578f90330e6
font_01_sfnt_off0000c4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4F2 15240 bytes
SHA-256: d767d480ae224f30b032e6844a9717d357bc9a9e5f38813b5695a6664e9a8a7d
font_02_sfnt_off0000eb74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB74 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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