Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba675f80b4d082ec…

MALICIOUS

PDF

100.7 KB Created: 2021-03-03 08:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8f8643dd3abd8bc155093a49a7d61bf4 SHA-1: 5a3a5395462ae08b4b5ecf3a378d1b330f045ade SHA-256: ba675f80b4d082ecfeb649579b34bc8034220cbcbe1c1bea949708ecd38fbae2
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or to download further malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kuzutuzo.ru/aws?utm_term=what+are+the+three+tiers+of+vocabulary PDF link annotation
    • http://amsidisi.xyz/54293185160stqae.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/64400335581fsog3.pdfIn PDF document text
    • http://smartcreditscore.info/rebelion_en_la_granja_personajes_secundarioskj6fb.pdfIn PDF document text
    • http://digogipexoluku.iblogger.org/44057698180.pdfIn PDF document text
    • http://rejuxipo.iblogger.org/coles_group_annual_report_2007.pdfIn PDF document text
    • http://jovopomutulilo.medianewsonline.com/minn_kota_riptide_powerdrive_55_trolling_motor_w_i-pilot__bluetooth.pdfIn PDF document text
    • http://slmit.fun/51029559775ucfmi.pdfIn PDF document text
    • http://udilische.club/50813793071f69p3.pdfIn PDF document text
    • http://givepamodugag.22web.org/49794887965.pdfIn PDF document text
    • http://xevamoz.mygamesonline.org/21482495657.pdfIn PDF document text
    • http://pinezov.iblogger.org/top_notch_fundamentals_b_final_exam.pdfIn PDF document text
    • http://usesoda.pro/21st_birthday_invitation_wording_templates5cko2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sugowubuf/zusadesemugajizuwed.pdfIn PDF document text
    • http://ferurexage.epizy.com/50966787328.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/mechanical_engineering_project_report_example.pdfIn PDF document text
    • http://fowimudetaze.epizy.com/analog_signals_and_systems_kudeki.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/87118641347.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/15881983614.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/15349244119.pdfIn PDF document text
    • http://sekusasumoda.rf.gd/20391049914.pdfIn PDF document text
    • http://givemuzod.epizy.com/keroverirafiwelo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001416f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1416F 5060 bytes
SHA-256: 253feddd80112f0fa2b2a0a389cce5d0e1c435cb3c096fb331865fd9d4866d2c
font_01_sfnt_off000152d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152D2 10688 bytes
SHA-256: 73ace816ed3a49ee3d1795e7c567763b4033754f56b2a25dffcec154e6c0ead8
font_02_sfnt_off000176fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176FA 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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