Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae3e0496ccdd2d1b…

MALICIOUS

PDF

74.9 KB Created: 2021-09-11 01:35:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9b8a7b32d126b9d141f2d07cd061313d SHA-1: 786fedafb710b1977cc9991e9436dfedddd0ee40 SHA-256: ae3e0496ccdd2d1b72a260a2769476efa38cde25afc9c26d8c306156d19a3948
134 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external URIs, many hosted on disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading further malware. The presence of embedded JavaScript points to its use in executing malicious actions within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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://medvor.ru/uplcv?utm_term=ultimate+car+driving+download PDF link annotation
    • http://lideparts.com/userfiles/file/1631256468.pdfIn PDF document text
    • http://piannocreativo.com/js/new/fckeditor/userfiles/file/57468757497.pdfIn PDF document text
    • http://jiachuankeji.com/upload_fck/file/2021-9-8/20210908091406254308.pdfIn PDF document text
    • http://traktorpulling.de/ablage/userfiles/files/79052962803.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/gabosorixukukikizad.pdfIn PDF document text
    • http://vaonhaphatphap.com/images/uploads/files/madokijodagibudumoxokub.pdfIn PDF document text
    • http://hmed.vn/upload/files/78515526728.pdfIn PDF document text
    • https://kuzeyilac.com/resimler/files/90556654386.pdfIn PDF document text
    • https://suacuacuontoanphat.com/upload/files/mugozovewojogazorilodotof.pdfIn PDF document text
    • http://www.mmd.ntou.edu.tw/ckfinder/userfiles/files/kukuwaxopi.pdfIn PDF document text
    • https://booburger.myagenda.cz/pictures/editor/files/suniju.pdfIn PDF document text
    • http://gerocuki.hu/user/file/bifokilenifivoliwefiguw.pdfIn PDF document text
    • http://thekreativecompany.com/uploaded_files/userfiles/files/14871041294.pdfIn PDF document text
    • http://gd-weimi.com/upfolder/e/files/20210902142615.pdfIn PDF document text
    • http://thingsantiquesla.com/userfiles/files/pefukixexofu.pdfIn PDF document text
    • http://qianshunqs.com/admin/upload/fumojurepisezeb.pdfIn PDF document text
    • https://seedomoretravel.com/files/files/76703253198.pdfIn PDF document text
    • http://csc-0411.com/userfiles/file/20210902122407_487hl6.pdfIn PDF document text
    • http://topstec.com/d/files/60047739512.pdfIn PDF document text
    • http://stimatacasa.eu/userfiles/files/fatanuwituxomulemimimoxex.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/161332e8873747---pugofasafopolebaputikofur.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/5acfb918667aa6a0904d3923dd26178a/78093795532.pdfIn PDF document text
    • http://odontoflash.eu/userfiles/files/buromirenimaraziravigikax.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_off0000c2d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D7 16572 bytes
SHA-256: 71d9a0233d914c21e5f2d0d3ee9a193e140c68eaccbbafca232a86f6ed4cacb7
font_01_sfnt_off0000ed48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED48 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001055f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055F 10704 bytes
SHA-256: 510e89bea773df5ad11d0098fce5fbd84199c866ba8f21c629f0c4d26132f9af

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