Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d9edeef5628b43…

MALICIOUS

PDF

73.7 KB Created: 2021-03-02 21:30:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0358f13cae3c4219cf2f6979a2c466d0 SHA-1: 521100211a894db6013333ab3fec32e4e3f0ef91 SHA-256: 58d9edeef5628b43be5b1199cf3476c57dc330b1617999592e27fa29b1a0a664
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://botokaw.ru/award?keyword=how+to+connect+polk+psw10 PDF link annotation
    • https://cdn.sqhk.co/ralapogifur/bhabjiy/fixera.pdfIn PDF document text
    • http://cleanup-sale.site/how_to_set_citizen_eco_drive_watch_wr200xkhdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476567/normal_5fe4d5fff4065.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/hkxiff1/wodalitulusuv.pdfIn PDF document text
    • https://cdn.sqhk.co/dasotipamu/Zgfjbhd/stampede_definition_oxford.pdfIn PDF document text
    • http://devgm.design/what_are_the_25_rules_of_civilityveu4m.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/zivifivabina.pdfIn PDF document text
    • http://nomokesus.sportsontheweb.net/4451044123.pdfIn PDF document text
    • http://geosen.net/common_themes_in_african_literaturezixnu.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/dujahgC/6260176141.pdfIn PDF document text
    • http://detonic-romania.website/vuxemaragiwulidavifisamogmjrz3.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/T0pRiew/bilujatodut.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/listening_answers_cambridge_6_test_3.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/cdc_influenza_fact_sheet_2019.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/75565792078.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/gukupamepitejozerodopakew.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/bpc_full_form_in_pharmaceutical.pdfIn PDF document text
    • http://fowimifefezujo.myartsonline.com/whirlpool_cabrio_gas_dryer_thermal_fuse.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_off0000e56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56E 4932 bytes
SHA-256: 9642ed92206e5be89b13f5414fba51fa4ef881eb62c034b81b2e6577ca0a8ede
font_01_sfnt_off0000f666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF666 10472 bytes
SHA-256: 090d12a492048b0d6caff86ea9e860fe733f1349f8393f70441435c762ceffe7