Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcd259308930ab0…

MALICIOUS

PDF

76.3 KB Created: 2021-03-22 19:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 468eeee4d18628c0d567a672966c7bd2 SHA-1: caef569cf92f6661034a507bff2e1f121c511bcd SHA-256: 2bcd259308930ab04b3e6fb18342f16f112f3aadf8018c94057761b7162bd7c1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for ClamAV detection. An external URI pointing to 'leonvi.ru' was extracted, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and the presence of an external URL indicate a likely attempt to redirect the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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://leonvi.ru/award?keyword=an%25C3%25A1lise+sint%25C3%25A1tica+visual+ernani+pimentel+pdf
    • https://cdn-cms.f-static.net/uploads/4408707/normal_604cd898aaff8.pdf
    • https://static.s123-cdn-static.com/uploads/4473062/normal_5fc924ecd8845.pdf
    • http://politach.com/2875143173ohgmt.pdf
    • http://lifeit.pro/wodugiwakariwevkur0h.pdf
    • https://static.s123-cdn-static.com/uploads/4392656/normal_5fcd8ce9a2906.pdf
    • http://terem.space/luvigajewukuu8q8o.pdf
    • https://static.s123-cdn-static.com/uploads/4491152/normal_600704e55b6e8.pdf
    • https://cdn-cms.f-static.net/uploads/4392871/normal_603e8ee573bcb.pdf
    • http://wonder-ita.space/9698604283369e87.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gonefuxirazu.rf.gd/ignou_tentative_date_sheet_2018.pdf
    • http://bavufupuvamopaf.atwebpages.com/test_de_canales_de_comunicacion.pdf
    • http://jokubamobivavum.onlinewebshop.net/73592158190.pdf
    • http://tuvixivo.epizy.com/tejojefasukerutafaloje.pdf
    • http://saderure.rf.gd/autocad_2017_student_version_free.pdf
    • http://zunuwovadete.epizy.com/volume_of_combined_rectangular_prisms_worksheets.pdf
    • http://ladurabazidema.onlinewebshop.net/caricature_drawing_book.pdf
    • http://desovizipelo.onlinewebshop.net/99603818270.pdf
    • http://xupuminepozil.rf.gd/jalodadinaxawubekasag.pdf
    • http://dozopedatofol.atwebpages.com/union_jack_bunting_template.pdf
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddf1.bin
a336bb2e108957fbd481885884ad046341927f7402cf9c904f8928e8cab67f16
pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF1 5584 bytes
font_01_sfnt_off0000f056.bin
118dd7c51f13c200feb0aa7cb87b2320fd6d1ea5e1498352924771fba9062673
pdf-font-stream PDF embedded font (sfnt) at offset 0xF056 13044 bytes
font_02_sfnt_off000117b2.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x117B2 16204 bytes