Malicious PDF — malware analysis report

Static analysis result for SHA-256 729f9d9f8745dc75…

MALICIOUS

PDF

73.9 KB Created: 2021-05-17 06:04:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 426da692611534c8cd3eeda107118696 SHA-1: 56c601909abba6b2a3e2c43dcc9f3490e1e5822a SHA-256: 729f9d9f8745dc75ddb29964f9cc3166b3e8dcee7a1285ecd2218c0ac581638e
104 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'soxebez.ru' suggests an attempt to redirect the user to a malicious site, likely for downloading a secondary payload. The 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed as a lure for a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://soxebez.ru/strik?utm_term=hp+deskjet+2620+wireless+setup+mac PDF link annotation
    • http://jedusajinud.mygamesonline.org/botox_injection_technique.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426822/normal_5ff76447dda4b.pdfIn PDF document text
    • http://lapiwudoxavov.scienceontheweb.net/pisusisenulakivigil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470679/normal_6042dc77244be.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/xevujinege.pdfIn PDF document text
    • http://kiloritijuxat.iblogger.org/miller_thunderbolt_225_welder_for_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe2d5c6-1692-459f-aa09-4c32cc03d100/canon_powershot_sx100_is_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7241527b-b8ea-4580-8b12-6277a679e07a/xaxirixomizube.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/bach_flute_sonata_e_minor_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be3b52e-3b51-4c2f-bac9-387600cddf62/how_do_you_change_automatic_transmission_oil.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/87235498700.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/free_audiobook_s_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/car_value_guide_nz.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/fegilosowof.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/how_to_troubleshoot_a_no_power_issue_on_your_dell_laptop.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/70634831524.pdfIn PDF document text
    • http://luxizetugo.epizy.com/numatonigakemesidiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17afbfdd-1eaf-4b61-80a7-e85fd2eab20e/tidepadelelizanegepu.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e10f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10F 5840 bytes
SHA-256: a0502a7d2e613e0edaee2e4effdde94a3c8183d5181842fbd76d6617d2e89c7a
font_01_sfnt_off0000f4f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F5 11248 bytes
SHA-256: 635aca4891ed94e0d6d7270050825a581bf2736f6f90e3eb9c5928d265e86cce

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