Malicious PDF — malware analysis report

Static analysis result for SHA-256 d56420d9a09bf14a…

MALICIOUS

PDF

85.7 KB Created: 2021-09-19 21:22:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4d830058931a31a87b97bb324037a58f SHA-1: 6b90806025dc6caf1d116c5218a87dc47098863e SHA-256: d56420d9a09bf14a4aef47fa1bd03d7325ec983dbbec9b1af4a546cbc3af969a
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external URIs, indicating it is likely part of a phishing campaign. The presence of embedded JavaScript suggests an attempt to execute malicious code within the PDF viewer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://pixomot.ru/uplcv?utm_term=what+does+the+scaffolding+do+in+minecraft PDF link annotation
    • https://perfumes.dropship-tracking.com/userfiles/files/38401045372.pdfIn PDF document text
    • http://www.florentmaussion.net/userfiles/File/lifazako.pdfIn PDF document text
    • https://trouver-une-ssii.com/img/pics/files/fajogogomixepodumakane.pdfIn PDF document text
    • http://kitpaisal.com/mypicture/file/xonudujop.pdfIn PDF document text
    • https://redengewinnt.com/userfiles/file/vifafaj.pdfIn PDF document text
    • http://andreevka.topmebli.com/content/xuploadimages/file/vidupekinobalipume.pdfIn PDF document text
    • https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/3f3cd1677a7644e023a7ae5cd61e5e7a/82596702110.pdfIn PDF document text
    • https://smartbrand.ro/mm/file/jinatola.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319d100b3b7---6695478176.pdfIn PDF document text
    • https://tdfstore.it/file/kuwapatuwelirisu.pdfIn PDF document text
    • https://byocamacho.com/ckfinder/userfiles/files/98256572938.pdfIn PDF document text
    • http://idcla.net/upload/files/fokejudesazux.pdfIn PDF document text
    • https://strings97.hu/userfiles/file/2356929013.pdfIn PDF document text
    • http://bangtutrang.com/upload/files/19725839622.pdfIn PDF document text
    • http://easternhoteljeju.com/FileData/ckfinder/files/20210905_6EBEA4C1E70E2B3A.pdfIn PDF document text
    • http://novafish.it/userfiles/files/85324534158.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/nonudipodu.pdfIn PDF document text
    • http://spellenindex.nl/images/uploads/46162344747.pdfIn PDF document text
    • http://phutungtdc.com/upload/files/dafoxesewenik.pdfIn PDF document text
    • https://copacndg.com/images/uploads/files/91564088045.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-09-16/images/files/47500131807.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/raxar.pdfIn PDF document text
    • http://willbramephotography.com/wamuselages.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/fabal.pdfIn PDF document text
    • https://www.carnesvarejo.com.br/assets/ckfinder/core/connector/php/uploads/files/zebexujokefubekafeb.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_off0000e9fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FD 17828 bytes
SHA-256: e6d4666cbe90a1d9c95be0258f36b9eb8fcb6d9a84226fc09c63234e2ba65eb5
font_01_sfnt_off000117a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FBE 10916 bytes
SHA-256: 1ed3dbecedf5264abee498bde0ad5ed677fe0269e9e9adc1accb58fb01539aaf