Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6135da4d8abab1…

MALICIOUS

PDF

73.8 KB Created: 2021-09-10 05:46:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 30d9ed37e370b09445fcb4e91494c6ff SHA-1: b6d45a03b15923450ae591a5f5ff3e3b29ed04c1 SHA-256: 6e6135da4d8abab1ddaccc46effebdec0843e170c0393d35c85206bb98a5d71c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded JavaScript and numerous external URIs, suggesting it is designed to redirect users to potentially harmful websites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports that the PDF is used to host a large number of links, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://bocion.com/ckfinder/userfiles/files/zugumebavafevofijagewavev.pdf In PDF document text
    • http://csn-alliance.com/data/files/8707075085.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/pododabemin.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d1c75eb2d---10795937149.pdfIn PDF document text
    • https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/76758420401.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/xoluduso.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16130a0d909e6d---kisivigoxipo.pdfIn PDF document text
    • https://radio-clipa.ro/userfiles/file/73724488845.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/26911371824.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/fezoditinezafe.pdfIn PDF document text
    • https://rumahbaruku.com/contents/files/xutubagujezipofanuwom.pdfIn PDF document text
    • https://satnamunicipalcorporation.com/admin/ckfinder/userfiles/files/tadapizugetigadusizegi.pdfIn PDF document text
    • http://abwjefferson.com/uploads/files/bijatijarer.pdfIn PDF document text
    • http://kemnhapkhau.com/upload/files/75073327311.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/87107611311.pdfIn PDF document text
    • https://turkuazhost.com/calisma2/files/uploads/41787775700.pdfIn PDF document text
    • https://lrsinc.co/userfiles/file/mebafoveva.pdfIn PDF document text
    • http://softwarefactory.nl/images/file/87167649105.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/viduzibuzafefadisaf.pdfIn PDF document text
    • http://kammatrans.com/userfiles/files/sokibagugudonunadaluto.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109061146573205.pdfIn PDF document text
    • https://sfasg.jp/js/ckfinder/userfiles/files/93979502645.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=mha+two+heroes+watch+freePDF 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_off0000bc86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC86 17776 bytes
SHA-256: e649b5ed94f2bf4cb25771a5ed10325a737e6cb189402df8357a9c3d35aeaf1a
font_01_sfnt_off0000eabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000102d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D6 10268 bytes
SHA-256: e64509f8250b3f2612a3f9c92e585b687c486b4f4dc868ab22952cb448d0aa51

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