Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce64e86799447048…

MALICIOUS

PDF

141.4 KB Created: 2021-04-20 20:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c661b7f40ef240ecad89bef2ab0f0164 SHA-1: 75476d65a4880f495bbd5a4029c39a129d3b5242 SHA-256: ce64e86799447048b65cb9681cc2dca82393de7fee476a7d31650bd1daf211ce
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a heuristic indicating it instructs the user to disable security software, a high-risk behavior. It also embeds a URL leading to a phishing-related domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely a phishing lure to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=how+to+activate+autodesk+autocad+2020
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/rijomitajewulo-nofomole.pdf
    • http://souve.me/is_the_5th_wave_having_a_sequelo78rx.pdf
    • http://larekew.mywebcommunity.org/types_of_bill_of_lading.pdf
    • http://geosen.net/mobile_app_landing_page_html5_templatek1649.pdf
    • https://saxeguwub.weebly.com/uploads/1/3/1/4/131406831/pafawebazuwimuxezep.pdf
    • http://instas.site/compare_slingbox_m1_and_m26plom.pdf
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/xenotukeke.pdf
    • http://autobaff.xyz/is_parental_alienation_a_crime_in_texasl5cle.pdf
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/6c02c390c7.pdf
    • http://collegegraduatecentraldating.com/65466058705fbffh.pdf
    • http://copyrightnotice-ig.com/lavuzazewos7t2zf.pdf
    • http://instapriz365.site/maloxisidulafulekirakatmollq.pdf
    • https://losebevaxefot.weebly.com/uploads/1/3/5/3/135347065/lipafewefujejetek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c6d82962-5268-41c3-9f66-8ee4a56b3d41/nosagumijolirilar.pdf
    • https://s3.amazonaws.com/mexesazaxasa/formation_barman_alternance_paris.pdf
    • https://uploads.strikinglycdn.com/files/d70ae1cc-f761-4fcd-9166-7886d46235ab/fimitovafewotapipo.pdf
    • http://fejonaxi.myartsonline.com/gate_syllabus_2020_civil.pdf
    • https://s3.amazonaws.com/seriposuj/genetic_code_chart_worksheet.pdf
    • http://kivozusemu.atwebpages.com/candide_overture_clarinet.pdf
    • http://fovawipemezipu.myartsonline.com/29741437638.pdf
    • https://s3.amazonaws.com/zumezeviwakiz/how_to_rinse_hair_dye.pdf
    • https://uploads.strikinglycdn.com/files/55792a88-cdc2-4d43-8796-98b5f23875ad/56454409817.pdf
    • https://s3.amazonaws.com/sudevejerifu/77364007245.pdf
    • https://s3.amazonaws.com/lotibabakuj/zabonutoduwalelejoxuzos.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a4b3.bin
bbbf334421f350626354839992e703f7e3769066f16c7dee72d4c31d0044ce26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A4B3 9128 bytes
font_01_sfnt_off0001c34a.bin
aac9e14116e342bb3cf96200bd4a75a6ab37e1aedd702f72082e2a2637f12012		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C34A 5256 bytes
font_02_sfnt_off0001d558.bin
a662397cc32e1926d9d6a976e86e50c89c070658d9599969afaf3e5c8a44ef41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D558 19636 bytes
font_03_sfnt_off00021187.bin
0de93b0a2247b948a8668c38b827be238fd3c619dc558f6d07a7b44fc4b728de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21187 16212 bytes

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