Malicious PDF — malware analysis report

Static analysis result for SHA-256 839a1fbf9044c802…

MALICIOUS

PDF

72.5 KB Created: 2021-02-17 21:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fe2fec3c7a949f174da102352fc32739 SHA-1: 0cc2b54f1a3838eef206b8eb616b2f52d11ef64a SHA-256: 839a1fbf9044c802aa68e67e57a040f0ef643e5d6c5568e0e2a98ab6bcc7af69
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/wb?keyword=how%20to%20look%20up%20google%20search%20history%20on%20iphone PDF link annotation
    • http://merutakozuxonu.22web.org/forodurajuxa.pdfIn PDF document text
    • http://tikenifoziv.22web.org/2016_buick_verano_service_manual.pdfIn PDF document text
    • http://digogipexoluku.iblogger.org/9337918540.pdfIn PDF document text
    • http://zanatax.22web.org/sudepabilakam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480595/normal_5fe92e763fe09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepakumikebusu.epizy.com/likumumojovazowudigikawax.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/64284128883.pdfIn PDF document text
    • http://kazixovo.rf.gd/gijuvufenenuri.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/confusing_spelling_words_worksheets.pdfIn PDF document text
    • http://rubipupajet.rf.gd/google_camera_android_version_6._0_1.pdfIn PDF document text
    • http://tufomatewivade.rf.gd/bl_ap_cp_home_csc_s6_edge.pdfIn PDF document text
    • http://mafofeguf.epizy.com/86160639587.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/tales_of_symphonia_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/99351430399.pdfIn PDF document text
    • http://xefujifivifizu.epizy.com/classification_of_chemical_reactions_lab_report.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_off0000df3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3E 5412 bytes
SHA-256: 8027f1cd6dd9bb54ea7b6f9d761f4527006900f423fb9eb5a334e0629169bcd0
font_01_sfnt_off0000f1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BE 10292 bytes
SHA-256: 2a9c63c72a9ad452aa0ae9b2a65358212e62fa82f4cd6cc0de7f2f72e02ff4ac