Malicious PDF — malware analysis report

Static analysis result for SHA-256 60bb6c6ac4b977d8…

MALICIOUS

PDF

71.8 KB Created: 2021-02-21 18:15:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 590bf8287b4194f7e3509684c2795715 SHA-1: c5349aacc9f8f2118ee9dabc80e7d67aaadc1506 SHA-256: 60bb6c6ac4b977d8d2cf9a9a7a5ff96e41ca552f0a2469490a6adf1f64f8edfd
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://bologen.ru/aws?utm_term=computer+network+simple+define PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490375/normal_5fdaefbd3ad79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374860/normal_601ed1d005496.pdfIn PDF document text
    • http://gadimikofeboto.iblogger.org/66410033189.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5fed52b13e02b.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/fuzafuzeruwit/free_color_sheets_halloween.pdfIn PDF document text
    • http://wimarewixogax.epizy.com/15033564550.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/82915694081.pdfIn PDF document text
    • http://fupuvomevo.rf.gd/why_use_a_pedestal_sump_pump.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/dad_s_worksheets_reducing_fractions.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/76108965199.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/ayat_ruqyah_untuk_rumah.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/attendance_register_format_with_in_out_time.pdfIn PDF document text
    • http://gatokelemek.rf.gd/11513734297.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/vuxewitazej.pdfIn PDF document text
    • http://wezikadedikenev.epizy.com/40222243184.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_off0000df10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF10 5040 bytes
SHA-256: 8b5bbfb11d01dec3aef1e052ddd8423f2c2e90e3d057d2443981db146626c8e4
font_01_sfnt_off0000f033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF033 10016 bytes
SHA-256: a3e8253f52f6613d2bab36c146485a63bcf526ee17b89a9955ff8605234f6aa2