Malicious PDF — malware analysis report

Static analysis result for SHA-256 6658221f1398ef7a…

MALICIOUS

PDF

81.9 KB Created: 2021-06-06 21:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 9cc370a00acdff8e9d9a2565914a5853 SHA-1: 9a76cf50b519a5b059d0697c0f5f37bf29873017 SHA-256: 6658221f1398ef7a043d41bbca76d3775cc9bf4c7252bf3ffa21f836e9626f86
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting the document is a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://coretry.ru/pbw?utm_term=pelicula+completa+la+bella+y+el+maletin+en+espa%25C3%25B1ol+latino PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369334/normal_5feb487a266d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452863/normal_5fedc27e48052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444643/normal_600b2ee435c28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458388/normal_60bc78fb4fa72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_6029dbe5a1e0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5ff54be00368f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466135/normal_5fe21d9a7aeb4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387242/normal_5ff50715a6628.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457011/normal_5fc990fae2609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461211/normal_60131df9a71c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490266/normal_606e25d76ec63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405409/normal_603a47446997a.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
    • http://wiliser.pbworks.com/w/file/fetch/144475932/mawewiwaxim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69fb186-5b56-4e95-b14f-122de8fe6d04/85885722818.pdfIn PDF document text
    • http://nosiravuga.pbworks.com/w/file/fetch/144673731/competency_based_training_and_assessment_australia.pdfIn PDF document text
    • http://bilabegape.pbworks.com/w/file/fetch/144650070/librecad_dimensions_wrong.pdfIn PDF document text
    • http://bukafag.pbworks.com/w/file/fetch/144599430/bikenu.pdfIn PDF document text
    • http://deduxofevit.pbworks.com/f/playing_the_clarinet_for_beginners.pdfIn PDF document text
    • http://poxanoralanu.pbworks.com/w/file/fetch/144426870/79816565161.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46376fca-8b1c-4731-8c3d-4941ab86fd1a/43340372959.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d31709dd-4683-4854-bbd6-a35d25c4f273/winaduruk.pdfIn PDF document text
    • http://ririgifavem.pbworks.com/w/file/fetch/144711483/56098504474.pdfIn PDF document text
    • http://liguduper.pbworks.com/f/kajrare_kajrare_tere_kale_kale_naina_re_video.pdfIn PDF document text
    • http://kevuxezedila.pbworks.com/w/file/fetch/144735969/90529320520.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144423276/sejitisurifiron.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755d9c8f-77b0-429d-b31b-4b6845f2bbc5/tozewepediwabuxij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588e007f-6398-4e74-a420-68f0d03da748/fawufub.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_off0000eec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC1 5320 bytes
SHA-256: dc913fd8d36e11fb6279f7c072aadc1ce09512be06ee1cbdf5f9697f225eb250
font_01_sfnt_off0001007f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1007F 12148 bytes
SHA-256: 5f64937bf8abf1368d2e2452cc4db2579f5b07d3594f5a60fe66c59936af09da
font_02_sfnt_off00012865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12865 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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