Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10ec9b59f41db72…

MALICIOUS

PDF

159.4 KB Created: 2021-03-12 01:33:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: a734b5f9504bc2285e8bd4063e30c356 SHA-1: dde1036b325e00c98041fd96ac27b960955072b8 SHA-256: d10ec9b59f41db72e602e90903f2d6768ca0cfb765935aa572f374e6eb7aea7c
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, 'resalured.ru', which is a strong indicator of malicious intent. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, appears to contain metadata related to a report, suggesting a lure to trick users into visiting the malicious URL.

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://resalured.ru/123?utm_term=civicus+report+2017 PDF link annotation
    • http://ionatr.fun/69767189260bhv9g.pdfIn PDF document text
    • http://creamwalls.online/how_to_analyse_experimental_data295za.pdfIn PDF document text
    • http://tramlaweq.online/who_is_the_oldest_character_in_the_vampire_diaries1rgtv.pdfIn PDF document text
    • http://wexypay.icu/fodobikesopisebojetoligoynbcn.pdfIn PDF document text
    • http://nunedosigiruros.22web.org/jopumisi.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/legapatatezisa/valurebidik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52511291-6fdd-439d-b8b5-d5b13281af56/why_wont_pilot_light_stay_lit_on_furnace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b68bc08e-51e6-4010-9847-b6860b31075f/best_double_stroller_that_fits_chicco_keyfit_30.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/good_comments_for_students_report_card.pdfIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_c50fc3b3281e481ca4184955d48cf309.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/44945116684.pdfIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_e79d20f22d424fc9a9b0a424a0695828.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mosezavor/83268154680.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8845eab9-cfbe-4467-9d03-6e85bce49829/69988464645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c555c5f-bf8c-4de9-ad0e-904fec9382ca/zivezusidamamo.pdfIn PDF document text
    • http://wabalegawamiraj.rf.gd/68391809003.pdfIn PDF document text
    • https://df6a9abb-74f3-47e1-b359-fe6d1019da36.filesusr.com/ugd/7921d2_c6aff249a494419eb49d597578eaf76b.pdf?index=trueIn PDF document text
    • http://riwigov.rf.gd/heart_broken_status_for_whatsapp_video.pdfIn PDF document text
    • https://40785fcd-1e5e-4316-9306-5db1d5795eae.filesusr.com/ugd/2f07a1_041b5b1ba4674d4daf70efd97a864099.pdf?index=trueIn PDF document text
    • https://b9e1b105-38e0-4bbf-baad-90de1e2021e1.filesusr.com/ugd/432b07_2bfeca17f9b8472c8868df70fcaad514.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22978 4948 bytes
SHA-256: bbd84cc79bfb5cffad249bed006fa1e27b185f0ecf000c7a57f2fedfcbd77968
font_01_sfnt_off00023a79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23A79 11960 bytes
SHA-256: 47e973df6bc711e0eea3b4ab61465bdbf8f13af7996f2c641a85edfd366598c8
font_02_sfnt_off00026232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x26232 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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