Malicious PDF — malware analysis report

Static analysis result for SHA-256 390bdfa18c811f63…

MALICIOUS

PDF

86.5 KB Created: 2021-03-19 04:12:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 952aa35d31603d5199ae0799a05864b8 SHA-1: 037b69c32a82c6a0469e0c96210033f75831c235 SHA-256: 390bdfa18c811f63b1678e39940389b44545a9b811d937b1104015a62d53a534
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF as malicious. The document body, though heavily obfuscated, suggests a lure related to 'media in Mexico'. The presence of an external URI and the overall detection by multiple security tools indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/aws?utm_term=medios+de+comunicacion+que+existen+en+mexico PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486190/normal_60400319d8d5e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460473/normal_5fe46ba5d9a7f.pdfIn PDF document text
    • http://bluebadgeapproval.com/the_inferno_summary_by_cantoyb3mx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454562/normal_5ffff6334c39f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374518/normal_60504dcb16efe.pdfIn PDF document text
    • http://opensol.xyz/rheem_gas_hot_water_tank_pricesqlc63.pdfIn PDF document text
    • http://topstop.site/20525869319o96y8.pdfIn PDF document text
    • http://hardcreditcheck.info/how_to_reset_a_rcakw7to.pdfIn PDF document text
    • http://arendagg.xyz/ver_pelicula_hermosas_criaturas_en_espaol_latinoy10tr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484114/normal_5ff2af256853b.pdfIn PDF document text
    • http://tomogorman.com/ti_nspire_student_software_serial_keygtbdh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_601eab9404c22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490127/normal_5fe10066249a5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/abs_plastic_sheet_for_sale_near_me.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_0de6a4049b7e44c6a8af121fb61191a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/introductory_econometrics_5th_edition_solutions.pdfIn PDF document text
    • https://662517ce-f374-4037-aebd-99b1dbe00103.filesusr.com/ugd/0c4177_697903aaf4534551bb1bf2eab06f4814.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/best_books_on_management_and_leadership_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/how_long_do_green_smoothies_last_in_the_refrigerator.pdfIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_a2e99bdf91cd4525b17fa49cbd87236d.pdf?index=trueIn PDF document text
    • https://14e2190e-1c7c-401b-bdd1-4e50d95f8180.filesusr.com/ugd/62a579_da141afebb8f49dd80e09ccd86cbd932.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4D 5156 bytes
SHA-256: c26da7f223f17a39b1cd2276ad873b418b05c1ec77ebac94daa9fa31b084e8f3
font_01_sfnt_off00010ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED0 11576 bytes
SHA-256: 077e27a928a50c7f49c6d88ef1def8ce538c6f81a4fa18201e93e94ec1536cd9
font_02_sfnt_off000134e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134E4 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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