Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c49be1235ac7ab2…

MALICIOUS

PDF

66.6 KB Created: 2021-02-26 02:30:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ed8c1cb8a59fba92a2226fc062857030 SHA-1: bf3c2487cede30148b46ad2ffb17a96074492ea2 SHA-256: 4c49be1235ac7ab2a361d441800142ba745258825692f813f6b584dcbb285d66
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://druttle.ru/award?keyword=brindle+wiener+dog+for+sale PDF link annotation
    • http://requiremcgood.com/jag_r_maria_1979ds0jq.pdfIn PDF document text
    • http://latencfsrt.space/rumegujijagigaxezerurim34at.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423454/normal_600aae7043b90.pdfIn PDF document text
    • http://tularafujebok.iblogger.org/didesizubufitukabiru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527164/normal_60292435ef7c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_601a197e8097f.pdfIn PDF document text
    • http://naturmilans.fun/15530282905v50fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414357/normal_60183cff1cc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380871/normal_601f3a5da67bb.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/polojuliragam/pastoral_visitation_a_pocket_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/blank_cheat_sheet_template_word.pdfIn PDF document text
    • http://dinoxisajuz.rf.gd/que_es_el_derecho_romano_vulgar_concepto.pdfIn PDF document text
    • http://wulagaw.rf.gd/98808788296.pdfIn PDF document text
    • http://jipuxebol.epizy.com/ms_word_vba_find_text.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/matemidokobox.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/88048972738.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/zonob.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/sozop.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_off0000c7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E6 5216 bytes
SHA-256: 2dbf2c88fd552e2ed56d176b66016b7c87b436b59359c6ca092027ce47f02fbb
font_01_sfnt_off0000d9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D0 10592 bytes
SHA-256: 12387f195ef7f0cc0c6e8de0bedb1f514784389b30286134245e757d875a7e97