Malicious PDF — malware analysis report

Static analysis result for SHA-256 f01452f52f1d37be…

MALICIOUS

PDF

73.9 KB Created: 2021-02-22 20:22:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ec321636637c3a2ef902b3956b9c2585 SHA-1: d40b45917f457dfd535b9494662ac0cfe5d8ee6a SHA-256: f01452f52f1d37bedf4e710b91f8bd0f8d956b88f9853d0f77385e11428f85a3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/aws?utm_term=how+to+stop+my+sharp+calculator+from+rounding PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402964/normal_6018b44b06c82.pdfIn PDF document text
    • http://visiblawty.com/9145212998q9u5y.pdfIn PDF document text
    • http://topsalon.xyz/gcse_physics_aqa_workbook_answersoun2i.pdfIn PDF document text
    • http://salonlabs.xyz/52401855685mkjnw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5fd5ff97bc79b.pdfIn PDF document text
    • http://seomagnat1.online/pasteurization_processw90g6.pdfIn PDF document text
    • http://idealslim-italiaoficial.site/vb_decompiler_pro_1139ejy.pdfIn PDF document text
    • http://bestsaleshopin.xyz/16803349037va578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471971/normal_6030df81bf356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470524/normal_602685644b288.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5ff51c1101e76.pdfIn PDF document text
    • http://ita-bio.fun/gukegpyvn6.pdfIn PDF document text
    • http://migriruy.ru/how_to_do_a_paper_in_chicago_stylettcou.pdfIn PDF document text
    • http://adyga.site/66016857291ycfyw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_601ede368e938.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/nelizenejakarug/adapting_to_the_environment_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/reporter_jobs_ireland.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/636434869.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_off0000dc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 5724 bytes
SHA-256: c5c77f34d4ff815db77dd4a917021ed4bffcadfe7e8b813f8a66f27d00ef6f0b
font_01_sfnt_off0000effe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFE 12696 bytes
SHA-256: 07f044d2e63e3ad6d8a84d5696b4bde423e61b8ad46c782c612165d320ba14ef