Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe128d8b749644fe…

MALICIOUS

PDF

68.1 KB Created: 2021-09-27 22:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 96fa64e026afd20b5f4610688b055e2c SHA-1: 30594f6dbba377a80bc40c5f9cc82e8b42fbbaf0 SHA-256: fe128d8b749644fef78013fd774058d332f82f9baad6f096f0194333e8987409
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicative of malicious intent. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM and the ClamAV detection strongly suggest this is a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the download or execution of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 http://versobrokers.eu/userfiles/files/42384151878.pdf In PDF document text
    • http://dastone.ru/userfiles/file/32408353619.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/tisuvukij.pdfIn PDF document text
    • http://xedaphcm.com/luutru/files/guwelizabuda.pdfIn PDF document text
    • http://duet-czluchow.pl/userfiles/file/disadaxademut.pdfIn PDF document text
    • http://imhome-listings.com/userfiles/files/rarelakoxuga.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/04f2ff0babbe821bc357e0568c05a88d/nekidibopi.pdfIn PDF document text
    • http://velapower.com/glwh/UploadFile/file/2021091312570473499.pdfIn PDF document text
    • http://baruraprotidin.com/assets/ckfinder/core/connector/php/uploads/files/disut.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149208cd627d---49118222490.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/winivabur.pdfIn PDF document text
    • http://foto-recepty.sk/images/fotky/lelifipu.pdfIn PDF document text
    • http://sissonne.hu/editor_up/xaduzug.pdfIn PDF document text
    • http://newo.ru/files/files/zapokopane.pdfIn PDF document text
    • https://eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/73384622224.pdfIn PDF document text
    • http://spprp.pl/userfiles/file/64518350885.pdfIn PDF document text
    • https://snpwachq.com/files/js/ckfinder/userfiles/files/16784547581.pdfIn PDF document text
    • http://chochosanencino.com/uploads/files/34070308104.pdfIn PDF document text
    • http://longtra.vn/userfiles/file/vogafaxi.pdfIn PDF document text
    • https://magnumattachments.com/ckfinder/userfiles/Files/jekezawajan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=necron+codex+9th+edition+pdf+free+downloadPDF 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_off0000abed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FF 14840 bytes
SHA-256: 5d5d27c545ecde11a59d4a11930b201f4e575c968d57292c94562c28fb9488c2
font_02_sfnt_off0000e940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE940 10880 bytes
SHA-256: f0ed4dbabf91a88982b981917cd737433e80bce6c3fb33e2e1c50fc6a8570feb

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