Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbfdfaee3bd3641…

MALICIOUS

PDF

69.2 KB Created: 2021-02-21 07:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d358ff2d260955f2082b051248ac8304 SHA-1: 31056fb3b89325d86536355130475a0a59e9ff4a SHA-256: 5bbfdfaee3bd3641acc9fd5185b2229a4411296c597c5c2ae058e6b7b020498c
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=what%20is%20the%20value%20of%20a%20usps%20forever%20stamp In PDF document text
    • http://megahit.space/3880523370izxr2.pdfIn PDF document text
    • http://dfwshootersupply.com/magazine_in_free_download7oq5a.pdfIn PDF document text
    • http://xepusuxewo.iblogger.org/16631098929.pdfIn PDF document text
    • http://hustlinmoney.com/abirami_anthathi_with_meaning_in_tamilbdei2.pdfIn PDF document text
    • http://ozalupa.space/fefovazenuxzyf8a.pdfIn PDF document text
    • http://rerubin.space/wimebofogarinolimuxejvl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411479/normal_5fccd04d02d4a.pdfIn PDF document text
    • http://xivoxuvawet.iblogger.org/microsoft_publisher_tri_fold_brochure_templates.pdfIn PDF document text
    • http://shtancircul.site/pevebizosepofuraridetoxi8uq9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://labinugekifuv.rf.gd/festool_1400_router_guide_stop.pdfIn PDF document text
    • http://davojuke.epizy.com/chhello_divas_gujarati_movie_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/11787230803.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/fekijikanudexigegixuku.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/contractor_invoice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/bakaniruri.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_off0000d229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD229 5212 bytes
SHA-256: 37a94dca1e7eb5001c3b0da69b6c59f59808bfddc01df4d76b91d00b1d8109f5
font_01_sfnt_off0000e3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CE 10700 bytes
SHA-256: cb69d4b7453fb6b9c854b432120b452cf5ededcea8d85c48b367388dc115b9fe