Malicious PDF — malware analysis report

Static analysis result for SHA-256 2053e5227c8271eb…

MALICIOUS

PDF

66.3 KB Created: 2020-12-23 19:44:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-19
MD5: a7e8a416d9b32fc8a1265c105776b0eb SHA-1: 3359307359e8bc0080234bdf70826bbf59261d0b SHA-256: 2053e5227c8271ebe75c14b57332fb2ea70c409dbf57b26ccbda8764d06eab36
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://s3.amazonaws.com/ruzumeb/vehicular_manslaughter_nh.pdf In PDF document text
    • https://s3.amazonaws.com/tokit/8575114648.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465539/normal_5fc79b2bf2461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_5fba1c31071e8.pdfIn PDF document text
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/2598645.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_5fa2d15d0195f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388617/normal_5fb2906571850.pdfIn PDF document text
    • https://gizarokidobibaw.weebly.com/uploads/1/3/4/3/134363860/7a3034ff8f33b9.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/guxebanulupidal.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/sexazijibukowopigado.pdfIn PDF document text
    • https://trafffe.ru/wb?keyword=adderall%20side%20effects%20in%20females%20with%20adhdPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c74f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c74f.bin)
    • https://uploads.strikinglycdn.com/files/571e02a0-5411-4258-bfcc-9fa845e3dbb8/25293517239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fdae7f6-ee4c-4fd7-8897-81c214dc0be6/baxivosije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60fd681f-6877-4b21-acc4-9cc448c45561/2010_mustang_gt_engine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e5531c-9613-45fa-82b2-0a67cb96ed20/32956199119.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 extracted file (font_00_sfnt_off0000c74f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74F 5344 bytes
SHA-256: 4b52c810c22e0daf07cbd68aab6870cfa4a70cec5d34e03a562e7db4b082f808
font_01_sfnt_off0000d95e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD95E 10192 bytes
SHA-256: 78e1822cb3cfa53733b701a44b45d6107a762ecab91cdb39108c3ac32fd8093d