Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef6e712fd39aca6…

MALICIOUS

PDF

89.7 KB Created: 2021-04-04 01:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14f06524baa0f391cd513fb4c88ec9d6 SHA-1: 4309687e9bb94486147adcb9bd262de14b4cddc2 SHA-256: bef6e712fd39aca6fd05bccb4928db3dcd3dfd945815a9ef2ecd464b1f5e42c2
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into believing it's a legitimate report. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or redirect the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://zajinet.ru/award?keyword=interpretation+du+scanner+abdominal+pdf
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5fd6f28f33600.pdf
    • https://cdn-cms.f-static.net/uploads/4485448/normal_5fd0b816d5284.pdf
    • http://help-copyrightviolationhelpcenter.com/gidenozajodowitw9f6o.pdf
    • https://static.s123-cdn-static.com/uploads/4370051/normal_5fd06308b94fb.pdf
    • http://milanomoda-italy.site/youth_conference_agenda_templatejzuah.pdf
    • https://cdn-cms.f-static.net/uploads/4376878/normal_60489bff3c546.pdf
    • http://dk-inc.xyz/7914421458575tnz.pdf
    • http://sivolejujivozul.scienceontheweb.net/29114463406.pdf
    • https://wagofokixe.weebly.com/uploads/1/3/4/6/134694124/4275875.pdf
    • http://itdiscount.pro/mupetelefoxopimitib8sefd.pdf
    • http://gratoraama.website/687918997440ejmf.pdf
    • http://tajumizigareni.iblogger.org/calendar_2020_october_november_december.pdf
    • http://jakiduve.scienceontheweb.net/19862842787.pdf
    • https://ruvatekokero.weebly.com/uploads/1/3/1/4/131437102/91e9bd800.pdf
    • http://vukifaralefer.iblogger.org/printable_clock_for_telling_time.pdf
    • https://giwelexe.weebly.com/uploads/1/3/0/8/130814055/971238.pdf
    • https://nodepuje.weebly.com/uploads/1/3/4/5/134518199/aeed871d6029b6f.pdf
    • http://kibixus.iblogger.org/apuntes_de_instrumentacion_industrial.pdf
    • https://pejejuwefosewa.weebly.com/uploads/1/3/4/0/134040570/4110376.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kujofumuv.rf.gd/risuxerovumusofidegipida.pdf
    • http://beninoduvewer.epizy.com/times_tables_practice_worksheets.pdf
    • http://sevezogare.rf.gd/93357586527.pdf
    • http://duruvuvo.rf.gd/20243115651.pdf
    • http://xolevusafo.myartsonline.com/purujogetinurobinaw.pdf
    • http://mowigefugitixa.epizy.com/66329384066.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001304f.bin
0aad1632115a761bc9e643a4c400168ea5cdee9da2e2ef4c054b54c10ffbf442		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1304F 21932 bytes
font_00_sfnt_off0000f74c.bin
36c8c583001480f47d88aa770e3cfb3cef80f9ac0f6db182eadf797aabf3ffc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF74C 5380 bytes
font_01_sfnt_off00010975.bin
1ec3600bb4fd24798bc2fb4a1f73d9c2eab2ed33578ebb4cffe2dd1e1cb1cd51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10975 12204 bytes

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