Malicious PDF — malware analysis report

Static analysis result for SHA-256 da234545e6c4ce21…

MALICIOUS

PDF

70.9 KB Created: 2021-02-15 06:41:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 52d1dd0d3431966674eac01f66a1310f SHA-1: f508d17511443066c0e5260b31c1210f67519d68 SHA-256: da234545e6c4ce21b7456a8ef7f228e8aa3263c5abfffcf38004ce818e3701da
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://leonvi.ru/wb?keyword=plague%20inc%20cheats%20apk PDF link annotation
    • https://cdn.sqhk.co/womilepeba/1mggjgR/tinkle_definition_english.pdfIn PDF document text
    • https://dujisiseruw.weebly.com/uploads/1/3/0/7/130776106/2ccde2c78b99971.pdfIn PDF document text
    • https://vigenuwotefi.weebly.com/uploads/1/3/4/0/134012497/730545.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/heTidFv/crossroads_ford_kernersville_nc.pdfIn PDF document text
    • http://kifenefazujiz.iblogger.org/explorers_of_sky_starter_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/pijajawopoji/oigehgF/wrestling_revolution_3d_mod_wwe_2k17_aptoide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500911/normal_60038d3fc5eeb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377909/normal_600485642286b.pdfIn PDF document text
    • https://monibobur.weebly.com/uploads/1/3/0/7/130776122/a362b153cd.pdfIn PDF document text
    • https://cdn.sqhk.co/segenoliz/hBjgyNK/fawakov.pdfIn PDF document text
    • http://registrat.space/venopaxiteduselamafazfpnh4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_5fea0b2059a89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nomulumipal.rf.gd/10_class_mark_sheet_2018_karachi.pdfIn PDF document text
    • http://matusaxategi.epizy.com/partial_derivatives_worksheet.pdfIn PDF document text
    • http://xifabemifuxiza.rf.gd/melomukezivake.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_off0000d8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BF 5164 bytes
SHA-256: 256296abefda3fcfb1d8f891d525946288c5f60d657eb9438688cadbbc07c75a
font_01_sfnt_off0000ea56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA56 10932 bytes
SHA-256: 9e18a07cc9f58563e0a47bb357494d5c09916d0a2eb624f907c9a8f695e85b7c