Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6dc66a11ad01f8…

MALICIOUS

PDF

82.4 KB Created: 2021-09-16 17:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c2af3b330f77c2ceddbb5c4148932eb6 SHA-1: d32093c4c7ebeb6bea502ce37fa49730eb91a9be SHA-256: 6d6dc66a11ad01f80e2417668a8f63706def752ee9b2e59882deb4ee3f79e846
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating an attempt to redirect users to malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or credential harvesting. The presence of embedded JavaScript points to T1059.007, and the overall delivery mechanism is consistent with T1566.001.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://crysiq.ru/uplcv?utm_term=hollywood+story+fan+gifts+cheat PDF link annotation
    • http://veraschwemmle.de/fckdata/file/gexemiwanuziri.pdfIn PDF document text
    • https://oilbasaro.com/web/images/ckfinder/files/20210906040018.pdfIn PDF document text
    • http://onlinevay.com/upload/files/xurapukex.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133610c3b86a---25033187151.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec23045f61---70682694879.pdfIn PDF document text
    • http://lso-msm.com/userfiles/file/94252897977.pdfIn PDF document text
    • https://tpk-m.ru/files/file/ninosawenubinafajata.pdfIn PDF document text
    • https://harmony-lazienka.pl/Upload/file/35307690824.pdfIn PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/gapawo.pdfIn PDF document text
    • http://etenindex.nl/images/uploads/18051537191.pdfIn PDF document text
    • http://kaitosushisb.com/uploads/files/82026821455.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/guzof.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/nawutorofujugusew.pdfIn PDF document text
    • http://fli.edu.mn/ckfinder/userfiles/files/97105688972.pdfIn PDF document text
    • http://ausafe.net/images/art/files/lujuv.pdfIn PDF document text
    • https://sieuthigo.vn/upload/ck/files/nuripomalidelotevafo.pdfIn PDF document text
    • http://sovaimm.it/userfiles/files/88411392596.pdfIn PDF document text
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/591bb5da813e7300a3fad134c5e5e75c/pojenuvunemivadixikijexe.pdfIn PDF document text
    • https://aymexco.ro/ckfinder/userfiles/files/56855242786.pdfIn PDF document text
    • http://longarmquiltingacadamy.com/fckeditor/userfiles/file/89401868163.pdfIn PDF document text
    • https://deltagroup.bg/uploads/file/3316128294.pdfIn PDF document text
    • http://dichvumucin.com/upload/ckupload/files/86411447888.pdfIn PDF document text
    • https://mediacentre.heathrow.com/js/ckfinder/userfiles/files/90827553070.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_off0000dc3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3B 10944 bytes
SHA-256: 1b14ab946935a39210de09bb9f1b1a4da66aee3ebd4c51b694fdf2916382e35d
font_01_sfnt_off0000f558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF558 18196 bytes
SHA-256: 0cc9d0a9d7485541b83a00ae70f89ef32362c8eff80b0336240400d3bec51e3b
font_02_sfnt_off0001247f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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