Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be152fefdb11b93…

MALICIOUS

PDF

77.4 KB Created: 2021-03-25 14:00:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 34a1859d7443f6cad53e40eb797d9880 SHA-1: ea224beb87d81c1988b6587a17b7b600e1932c7a SHA-256: 5be152fefdb11b935f09ad0f9e83dc9115876185b6743c23cef8b3e886152aeb
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, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, appears to contain text related to downloading a PDF, consistent with a phishing lure.

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://leonvi.ru/award?keyword=baixar+livro+adonai+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4486742/normal_5fe3c11fbb7dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414353/normal_6045d707d41f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458125/normal_6035594508e71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426697/normal_605af6fca97f8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462344/normal_5ff3a8d06ee9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491152/normal_600f6b51eb066.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5fc667ff29039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_60263f02bd646.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444374/normal_5fdb70fa3121d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_5fe77423bfd56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408991/normal_6004e5c3ce847.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373264/normal_5fe75bef53e41.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/lixasifasi/chhote_bache_ka_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/kugejakinixozitujofuxerik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2662575-75c4-4ad0-aa96-62156d40b97f/brother_3170cdw_drum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89ba78de-8ced-4d49-ad6e-b38f0aad7901/hp_laserjet_1100_toner_refill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/042b6e2f-50d4-45a6-b009-b921483fbc4a/stock_in_transit_in_sap_tcode.pdfIn PDF document text
    • https://s3.amazonaws.com/masevewi/how_much_is_detective_comics_1_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/formal_complaint_letter_hostile_work_environment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4292afc1-8254-462b-b7c0-31537834286f/is_gluten_free_food_good_for_type_2_diabetes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b69057-ac7c-4016-8d89-110e3a1b5bf6/does_gimp_work_on_a_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12fe0f3a-ce36-4082-88ed-40831a573f89/40590263858.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_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 5036 bytes
SHA-256: d91b5d7b5d2ac3acff2c10d0f8fe051f64cdff8b2fdcecf04cc224af5eb456c6
font_01_sfnt_off000100e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E0 11688 bytes
SHA-256: 8133c3c817d7d7b657905981dd9253a84c84b42b967eb0f85ccc4e7c2886d47d

Open this report in the interactive analyzer, or submit your own file for analysis.