Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deb236bf2782015…

MALICIOUS

PDF

76.7 KB Created: 2021-02-03 02:35:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fb5d779193e65641c2e0e35332086e1a SHA-1: d0c7c6e406911cf68a37fa4cc16917d52d071c1b SHA-256: 4deb236bf278201546c953b8551888c885b1dad4f82d14d2f52ad0bc3e1efb0f
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://crophysi.ru/aws?utm_term=symantec+data+loss+prevention+endpoint+performance+guide In PDF document text
    • https://static.s123-cdn-static.com/uploads/4462350/normal_5fcf89612c90d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369179/normal_5ff46e2ac2977.pdfIn PDF document text
    • http://sellforce.ru/rally_car_crashes_into_tractorkd9iv.pdfIn PDF document text
    • https://cdn.sqhk.co/regavebike/ziisK5M/palerabugodevujajoxin.pdfIn PDF document text
    • https://kogekotosejikol.weebly.com/uploads/1/3/5/4/135400664/rorotoruwasamazab.pdfIn PDF document text
    • http://molipetofokeva.22web.org/whistle_tamil_songs_free.pdfIn PDF document text
    • http://bachanalytics.com/tofidebodenofisuso1dxbb.pdfIn PDF document text
    • https://cdn.sqhk.co/feluxolid/Hjrgj36/minerijifivazalul.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/66109487570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5fdc5d3de2583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_5fd9310bf355e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_60114c907cf66.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/sojodafimorozi.pdfIn PDF document text
    • https://wenojobopowegit.weebly.com/uploads/1/3/4/8/134879608/7c9e692e8b7f.pdfIn PDF document text
    • http://tulotipokumubo.iblogger.org/kogozejovekowevet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimudovi.epizy.com/baldur_s_gate_1_sorcerer_guide.pdfIn PDF document text
    • http://vudalulok.rf.gd/hernia_interna_abdominal.pdfIn PDF document text
    • http://pavinudoj.epizy.com/baruch_spinoza_libros.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_off0000eb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6D 5740 bytes
SHA-256: e100f39ad0840ca3ed8ce537b180d92b7a4f5fb9f720410a5ed71a3c5a44c5fc
font_01_sfnt_off0000fef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF4 11424 bytes
SHA-256: eecfbd8052706b246997f806875426bde0b93d598eb21313372e6de295518920

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