Malicious PDF — malware analysis report

Static analysis result for SHA-256 e422f213b39edb44…

MALICIOUS

PDF

72.6 KB Created: 2021-03-06 22:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f0a718cf4100f47af2a7c629495e177d SHA-1: a441b1424f143dd9d269ae8bbd59602491d9b9c1 SHA-256: e422f213b39edb44abc2c03cf42a0e13d2f8ae4a4cb0bf386e6f17299548a1ad
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=all+my+sons+movie In PDF document text
    • http://diwolekeku.22web.org/blank_hockey_jersey_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481156/normal_603c658cb8628.pdfIn PDF document text
    • https://bufuxilanu.weebly.com/uploads/1/3/4/4/134402831/64a36f88b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421050/normal_603837bd5467a.pdfIn PDF document text
    • https://fafetomipisiso.weebly.com/uploads/1/3/4/6/134603542/ed6dd.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/lopasib.pdfIn PDF document text
    • http://nefozufovi.scienceontheweb.net/ejercicio_106_algebra_de_baldor_resuelto_41.pdfIn PDF document text
    • https://sakolepak.weebly.com/uploads/1/3/4/5/134588428/1531012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_6039f476c2dd1.pdfIn PDF document text
    • https://sidanarud.weebly.com/uploads/1/3/0/9/130969336/pobaberebevizop.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/39728596284oiy0o.pdfIn PDF document text
    • http://efarbok.xyz/express_vpn_crack_reddito1che.pdfIn PDF document text
    • http://lanufutado.22web.org/punctuation_practice_worksheets_for_grade_3.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/vodonazipisuv.pdfIn PDF document text
    • http://ideal-it.fun/42134986254lcsql.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juxirijedatez.rf.gd/bullet_journal_book_template.pdfIn PDF document text
    • http://gumizaxewa.atwebpages.com/76747150164.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/98902433611.pdfIn PDF document text
    • http://tudixuzaw.onlinewebshop.net/botupofevumebuza.pdfIn PDF document text
    • http://peledopa.myartsonline.com/vepuw.pdfIn PDF document text
    • http://mufifofoge.epizy.com/assassin_s_creed_unity_xbox_one_size.pdfIn PDF document text
    • http://xetonuvabogo.rf.gd/sawuxujagakovika.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_off0000e2e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E3 4676 bytes
SHA-256: 76c3caac32162eb2deda67e248801656660d0595b25c626cae8c8d918197a49a
font_01_sfnt_off0000f2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 10096 bytes
SHA-256: 2b73e2a97d52fd811a36ad49e93670c46d1ad91d1875054617190c709dc12fef