Malicious PDF — malware analysis report

Static analysis result for SHA-256 95dab1bbbaa5d1da…

MALICIOUS

PDF

83.0 KB Created: 2021-09-10 15:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 6b32930cf9a5b7667f402e2769cd267d SHA-1: d603d0d40f7fa416ba1e18f3b289be030d29ae91 SHA-256: 95dab1bbbaa5d1da6e03aca8ac2df6eae1b15acc713b340507e9deb77715cceb
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URLs, many of which point to disposable domains. The 'Fake CAPTCHA' heuristic indicates the document's primary purpose is to deceive the user into an action, likely to bypass security or download a secondary payload. The ML classifier strongly supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://laborke.ru/uplcv?utm_term=paano+mang+hack+fb PDF link annotation
    • https://miguktour.com/FileData/ckfinder/files/20210905_524D82EE5C6FF168.pdfIn PDF document text
    • http://castrolmintabolt.hu/images/upload/file/zanofaw.pdfIn PDF document text
    • http://aptekainternetowa.net/_mdm_apteki/file/93893742583.pdfIn PDF document text
    • http://tataservice.it/userfiles/file/julunofelupevalebiradike.pdfIn PDF document text
    • https://ekoelprom.pl/public/images/editor/file/12379022035.pdfIn PDF document text
    • http://isspskola.lv/userfiles/files/welam.pdfIn PDF document text
    • http://bumsnab.ru/uploads/files/pobib.pdfIn PDF document text
    • http://ehomerealestate.org/images/file/wimekezujusa.pdfIn PDF document text
    • https://www.totalblissbeauty.com.au/application/third_party/ckfinder/userfiles/files/24436034694.pdfIn PDF document text
    • http://audidalys.lt/ckfinder/userfiles/files/45661276199.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/juxuvosibod.pdfIn PDF document text
    • http://intproplaw.com/admin/uploads/file/3181137923.pdfIn PDF document text
    • http://ordinate-ltd.com/file_media/file_image/file/94254924055.pdfIn PDF document text
    • http://nj-rshb.com/v15/Upload/file/202196356145918.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/56033982843.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/98751077426.pdfIn PDF document text
    • http://kerekesvillszer.hu/UserFiles/file/lisoketemomukudonix.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/gukejidefobigexozokeg.pdfIn PDF document text
    • https://emprenderem.cl/files/48971584955.pdfIn PDF document text
    • http://janaturismointegrato.com/uploads/file/90512906428.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161336e9e5488a---tedutojil.pdfIn PDF document text
    • http://ledspectrumthai.com/ckfinder/userfiles/files/70900337511.pdfIn PDF document text
    • https://bytlly.com/1kyv06In 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_off0000d4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F2 21940 bytes
SHA-256: 9efead312313570b33a9c53323aeebf2732ecf7224161d56ee3925a005f96c18
font_01_sfnt_off00010e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001266a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1266A 10380 bytes
SHA-256: c7898180cf99de71cb75299fd7929d0991ad100a2d6a38e9544856c0b89c43fb

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