Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d98aa1f560bd254…

MALICIOUS

PDF

71.3 KB Created: 2021-02-21 06:33:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 507193620dbcfb05bdc8294c6d3c9408 SHA-1: d6b44478c4a6edc23dd9b004dbec50daf3efa405 SHA-256: 7d98aa1f560bd25403dc043695258feba40cd1f9821640607aace8086f36cfa3
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF containing an embedded URL that directs to a suspicious domain, identified by heuristics as a potential phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/wix?keyword=feather+cape+wedding
    • http://copyright-security-ig.com/add_watermark_adobe_xi7l52d.pdf
    • http://francobusiness.com/61268858850eg8k1.pdf
    • http://tesar-krd.ru/this_i_believe_essay_guidelinesg2wn7.pdf
    • http://wiinorama.website/onn_roku_tv_good_or_bad9xitk.pdf
    • http://instapriz.website/54472478213fldxu.pdf
    • http://mishgen.com/xuwumurogiwodipozowor2mc3.pdf
    • http://dawavuwera.22web.org/autonomous_maintenance_checklist_format.pdf
    • http://pl50off.info/97089228515lgi4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tomamujuf/baletufefolif.pdf
    • https://s3.amazonaws.com/jinabisura/advanced_selenium_reporting_selenium_webdriver_tutorial.pdf
    • http://gawoloresi.rf.gd/vafobitozobej.pdf
    • http://zimifad.epizy.com/convert_to_word_plus_crack.pdf
    • http://topuwagib.epizy.com/billian_billian_3d_song.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db67.bin
6945c1636451c5137a26ca206082174e764bae61c879caaec30450e68bd3c55e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB67 5172 bytes
font_01_sfnt_off0000ed16.bin
1c961ddbfea62698533a62f281a125317a52575235908f679a94e6db863787ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED16 10436 bytes

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