Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2198ebbdddec5af…

MALICIOUS

PDF

86.9 KB Created: 2021-08-05 22:22:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ee77ec4f4dfd9158be7ea1854cb4f67a SHA-1: b2b2abbc05a19f88d5fd332a35ad9075c0dda0de SHA-256: f2198ebbdddec5af473387efc91e1e2c9c75d03fd15c80832cfee2a875a485b7
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, some of which are hosted on compromised WordPress installations. The presence of these links suggests an intent to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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://infrive.ru/uplcv?utm_term=how+to+draw+toothless+and+light+fury+easy PDF link annotation
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/fe785e92912b1b4f074b190b648694ed/vajub.pdfIn PDF document text
    • http://mbjarrahi.com/UploadedFiles/New/file/74356788228.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/vuwupolo.pdfIn PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/56cce375e7cdb83824f84c255af43f8f/foduzavuxokivot.pdfIn PDF document text
    • http://mariopresto.pl/userfiles/file/3379565158.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160abeb1e250ad---99000320827.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb0cba0177---zupejaraxagirugapod.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/wugogon.pdfIn PDF document text
    • http://styropapex.pl/userfiles/file/rifitimominam.pdfIn PDF document text
    • http://digivideos.net/ckfinder/userfiles/files/fefovabojixujidigirused.pdfIn PDF document text
    • http://mtjjt.com/2013/upload/article/files/21073000515071653710b31.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076705343bb8---zelejuzigogunekozasisog.pdfIn PDF document text
    • http://travelshops.pl/userfiles/file/32610158088.pdfIn PDF document text
    • http://toastwarenhuis.nl/app/webroot/files/userfiles/files/70795160817.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/54958557379.pdfIn PDF document text
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16080764284a82---80963527850.pdfIn PDF document text
    • https://fentesmakina.com/paket/upload/files/38333524205.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/55275607731.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/3278c337e653f36ab4f8104a6ac12f21/33614790652.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f197c1a51f---62091210853.pdfIn PDF document text
    • http://aven.su/userfiles/file/20967417627.pdfIn PDF document text
    • http://leebyunghun.org/new/upload/board/files/79358380702.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608675ffc6622---fanafafomuzig.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160fe138f7d040---vipolutemifapezo.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/83926266288.pdfIn PDF document text
    • http://blessingsngo.in/userfiles/files/giferisavitapax.pdfIn PDF document text
    • http://vandervalk.reviews/app/webroot/files/userfiles/files/fugodedexegenelisaxitivix.pdfIn PDF document text
    • 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_off0000f0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F4 10924 bytes
SHA-256: 82c11e7d8d9895115d8c69b5b949dd4ba58c8db1e106a50bd4cd62760984bba3
font_01_sfnt_off000109fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109FD 16512 bytes
SHA-256: e1996ed38289a1560757afe644fb4f1703a829c10ae64fd68bdd2ef39694e8d0
font_02_sfnt_off000134d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134D6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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