Malicious PDF — malware analysis report

Static analysis result for SHA-256 7621a297b6b80dc7…

MALICIOUS

PDF

69.0 KB Created: 2021-02-13 21:36:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c5c33723ab3e816019216499a84bb62d SHA-1: 33db5f56af7bbf29f27c990890bfe311c9b9ff38 SHA-256: 7621a297b6b80dc7aed8c48b374d7f546fe56ad126a482e6187b509e19466539
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=anaconda+jupyter+notebook+free PDF link annotation
    • http://mafebeb.22web.org/vatavivapojusujamupedo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391898/normal_6015d5b55bdce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421224/normal_5ffeb366ab923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419828/normal_6008ac63900f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418188/normal_5ffa21c94f806.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijuwevame.epizy.com/aberdeen_standard_email_format.pdfIn PDF document text
    • http://kutezowifemiwe.epizy.com/angular_material_form_field_width.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/kizosapajuzevoleralis.pdfIn PDF document text
    • http://figopovu.epizy.com/wakomemev.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/anhydrous_ammonia_safety_data_sheet.pdfIn PDF document text
    • http://zoluwupaxefiv.rf.gd/tawesuvavaludoxipimupotu.pdfIn PDF document text
    • http://kebinuwozumen.epizy.com/iron_man_cast_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/sheets_of_frosted_plexiglass.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/dependent_clauses_sentences_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/gezevakam.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_off0000cf59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF59 5312 bytes
SHA-256: e374dc28564b59953ad07acf6fe07a6db451b876e1fb5de1c81b39b039cf4549
font_01_sfnt_off0000e189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE189 11244 bytes
SHA-256: 053bbc3d469be57f6ac0a9b8c24c269d332629b6165bb59aa2fb1a95f7cbf32d