Malicious PDF — malware analysis report

Static analysis result for SHA-256 750720999ce672aa…

MALICIOUS

PDF

82.6 KB Created: 2021-04-30 04:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e31a531903f3b142c8fd7fe0f721a9e4 SHA-1: b2013dc73b3ac5307795c03e550424553c2effbe SHA-256: 750720999ce672aa040b7ccbcfe45066d14991331aeb9892891f56568701837d
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'health and safety training'. No scripts were extracted, but the presence of external URIs suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://baarspo.ru/strik?utm_term=what+is+health+and+safety+training+in+workplace PDF link annotation
    • https://cdn.sqhk.co/jewimebobi/1A0ihjf/zomubalafivufifefumur.pdfIn PDF document text
    • https://cdn.sqhk.co/zoburawava/2qgjJih/xotisaxuxedit.pdfIn PDF document text
    • https://cdn.sqhk.co/kuvapipitol/EUhfghY/dekedenogibibapemovari.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/wzQhipB/724_area_code_location_florida.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420470/normal_60581a8938c66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459164/normal_5fdae36545a50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372373/normal_5fca65a1c5594.pdfIn PDF document text
    • https://cdn.sqhk.co/pisomuma/ijBghPf/vixobi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_601a7e7e1a059.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406223/normal_602d293f72714.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://uploads.strikinglycdn.com/files/f071e21c-5645-46ad-a23d-24cf016c9158/65087603571.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab74808-32ad-4e26-b6cf-6c719d400e28/5520110977.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/wizard_class_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2fbeaac-0f58-4ded-a1de-e2c9b1e6c666/digidesign_digi_003_rack_audio_interface.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/92760762414.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/what_is_sophos_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/favogapa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8253495-a95a-4ae8-92d5-86a69dea1044/32755563449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ba5b6e-9a05-4118-a638-7fcde57f550c/pobirozitokizakidofu.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/gary_vaynerchuk_quotes_on_business.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/mudabanozifoganutig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b97cd7-7d43-4e70-98f2-b8840b87ba52/xamukapalumuxolaxiz.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/60112538913.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbc50b57-8348-4f81-a472-bdaf5a4fa0d9/lagaxevop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a52851-03bf-4fd4-b621-f54949629963/what_does_chaos_mean_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7145aae-1c4f-4b87-9249-5902bc86a584/tikadizejufudotivotefig.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_off0000f52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52C 5476 bytes
SHA-256: 4f07e04a34fa2cf5cc8c7e63a3d12027275086792eeced34c14c466b1d00e1de
font_01_sfnt_off000107dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 11188 bytes
SHA-256: d0d48f6f80943eb40430d53747d256800cdcac88bda61f3115b008269d9ed275
font_02_sfnt_off00012df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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