Malicious PDF — malware analysis report

Static analysis result for SHA-256 215a960be8c8329b…

MALICIOUS

PDF

71.1 KB Created: 2021-02-27 06:42:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ee692d032ca39f389659a57934d82597 SHA-1: ffd2da2282e3aaf3aa13eb418a5ea5551fbbdb9f SHA-256: 215a960be8c8329b24b3eb527f5f59bdb58299c0339126e7745ba5cbd432c18d
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=how+to+create+a+cost+comparison+chart+in+excel In PDF document text
    • http://study-english-02.space/freckle_math_app5788f.pdfIn PDF document text
    • http://nicepics.xyz/20564394769m22du.pdfIn PDF document text
    • http://naturalm.space/11955191957k08al.pdfIn PDF document text
    • http://faceit.su/yo_yo_ho_ho_retro_platformer_apkw5u5z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410443/normal_601e2e5a25ac8.pdfIn PDF document text
    • http://alkim.xyz/lenovo_chromebook_duet_128gb_2-_in-_1nxo6x.pdfIn PDF document text
    • http://zoomita.space/rutidudizoxi1r94v.pdfIn PDF document text
    • http://findattime.com/89024905059tuf9i.pdfIn PDF document text
    • http://wide-mean.top/back_street_apparellgr5u.pdfIn PDF document text
    • http://wemepena.iblogger.org/59338860782.pdfIn PDF document text
    • http://pixelbarista.com/bournville_cocoa_powder_nutritional_informationw4ydv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxasimedoki.epizy.com/install_aptoide_android_tv.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/83598505769.pdfIn PDF document text
    • http://wojibikifi.myartsonline.com/66165415641.pdfIn PDF document text
    • http://javisan.epizy.com/clothes_vocabulary_activities_worksheet.pdfIn PDF document text
    • http://gigapexolazet.rf.gd/subdivision_meaning_in_tamil.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/pdf_to_word_doc_on_mac.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_off0000da7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7B 5296 bytes
SHA-256: 9920c34bcea4f0bf83a96850c321a8f4cb54f38d56d91718e0223b30b19a84e3
font_01_sfnt_off0000ec60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC60 10204 bytes
SHA-256: 8b18f2ff8c654dd0a7c5eb17dacca0372a9d551bd1a9b173f1aaa81a2e3329a1