Malicious PDF — malware analysis report

Static analysis result for SHA-256 4914b05a3396bdcd…

MALICIOUS

PDF

75.7 KB Created: 2021-02-06 09:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ac2122255b6c38dd1a55707c39e65593 SHA-1: 01bb470337a4f6a40a4bb9817acf3f67ec781699 SHA-256: 4914b05a3396bdcdfafee6f7396bc248071e725f087126b3603a9d64a194c6d6
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://seumenha.ru/aws?utm_term=american+gangster+movie++mp4 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474720/normal_5fe55ef04aa06.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/qEE4geE/femasob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_5fd7ebdab3126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366665/normal_5fd23cd2d3413.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368998/normal_5ff888bb3b105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402481/normal_5ff127f25563a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374199/normal_5fceafb7d8e07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501229/normal_5fe9b756e876c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413719/normal_600f8bef4eaa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fda728bb3e15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gabigirinekib.rf.gd/factoring_trinomials_a_1_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/88675010903.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/ziwoxumuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/dazufovetozakugupoto.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/short_abbreviation_of_former.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_off0000ea97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA97 5356 bytes
SHA-256: 8859ed18452b0562492b0a7b631fa1f520cc34cc85cfe7f96748f6af0a032267
font_01_sfnt_off0000fcca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCA 10976 bytes
SHA-256: a542530e6bfcc757b1210968c6dbf83be1dc9cd0cbb0e284cde7b5d80961d21e