Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9392d3299823fa1…

MALICIOUS

PDF

75.1 KB Created: 2021-03-03 04:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a54eb9cbe1a9a281afafe20a04f8c326 SHA-1: 9267f06e95965082d5c927fa25faf8497ee66d50 SHA-256: e9392d3299823fa1616a52ad4e7fed4c4472046545a94a3cf8f18d374fc69f4d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xajibur.ru/award?keyword=obamacare+for+low+income+families PDF link annotation
    • https://zewakifu.weebly.com/uploads/1/3/0/7/130740590/9102171.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464525/normal_5fee06d07e05e.pdfIn PDF document text
    • https://cdn.sqhk.co/nobipajami/aKjgJT7/waxomabizuwifaw.pdfIn PDF document text
    • https://dibagipowuxuz.weebly.com/uploads/1/3/0/7/130776183/riderogunisirad.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/fiejejg/25291741425.pdfIn PDF document text
    • http://bathforlegs.xyz/98317892807fbzpl.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/iaoidO5/90613854650.pdfIn PDF document text
    • https://tokuniti.weebly.com/uploads/1/3/4/3/134331772/9b5405ed1522.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426810/normal_600e76609e007.pdfIn PDF document text
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/41c50fa4716a.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/jedobufudajewu/codycross_answers_group_50_puzzle_2.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/zejavavodok.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/os_cuneiforme_mediale_intermedium.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/google_local_guides_connect_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/kabir_singh_full_movie_movies_counter.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/zuwineposaf.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/safipuvavetetuzunijaxul.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/auto_video_player_android_github.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_off0000e9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 5284 bytes
SHA-256: 608c951f70b1a5bb1a2ed7e4773a5a80ce2d9bb7c2369b08a255b5ce123c85e1
font_01_sfnt_off0000fbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAF 10428 bytes
SHA-256: 402b378037b1906ddc3036716d8d45b788a156cb8a7307694b3b0b7979dfda29

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