Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ea571d72fedb75…

MALICIOUS

PDF

72.4 KB Created: 2021-03-01 06:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 123c5b35c3be88becd602eb7a8bc95f3 SHA-1: db5bb00e04be363f419d1f88906a86bd8fc3e448 SHA-256: 97ea571d72fedb75ea36584de5c256a47ff03d447d9e62531566f18652a7a81f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gimoguvi.ru/wix?keyword=a+match+made+in+high+school+pdf PDF link annotation
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/949b3342f.pdfIn PDF document text
    • https://cdn.sqhk.co/rirexiwudag/hiifhBa/lixuvegeluzawamorugo.pdfIn PDF document text
    • http://regsenatvumen.website/who_is_batman_after_knightfall_protocolqz8rk.pdfIn PDF document text
    • https://cdn.sqhk.co/sifolilo/jevfijQ/viravusofibiv.pdfIn PDF document text
    • http://nutosuvitiraj.scienceontheweb.net/38347341114.pdfIn PDF document text
    • http://1green.space/b._ed_exam_form_2018rhi2f.pdfIn PDF document text
    • https://cdn.sqhk.co/kowazodonaf/hd7QifX/maxis_match_cc_long_hair.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/42330636278.pdfIn PDF document text
    • https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/852870.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/vista_50p_delete_user_codes.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/rc122_remote_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/zodenizekija/9jajf3C/chickamauga_battlefield_gun_museum.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/eBR5lYZ/download_ucraft_free_apk_kinemaster_diamond.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zerujafulo.rf.gd/12809264915.pdfIn PDF document text
    • http://muxosuzu.rf.gd/what_is_social_research_slideshare.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_off0000deec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEC 5464 bytes
SHA-256: bd9fad5d528881a7044ba12c69948197a0ef5a32a32d1d6daa825e782865c62a
font_01_sfnt_off0000f15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15E 10400 bytes
SHA-256: 71fd255d1e97b684b3b4a9eded7dbff91c93becfc032a43b020ca0c77f81b35c