Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f9c252f7e47acf9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-26 00:23:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 23b5847c5f9e822e7f790fc082a67ef6 SHA-1: 522314995fa85379093df26554d0ae60ceeff889 SHA-256: 4f9c252f7e47acf9811870a997952f8ddbca2067d5a9066569a384ff589187a6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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=bose%20321%20gs%20series%20iii%20price%20india PDF link annotation
    • http://hookup153.online/android_adb_shell_uninstall_app7eoyh.pdfIn PDF document text
    • https://karezolakep.weebly.com/uploads/1/3/1/3/131398125/mebezedij_botijel_ririvatoxubax.pdfIn PDF document text
    • https://moredotaze.weebly.com/uploads/1/3/0/7/130776260/7540937.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5fd27b3d3cb09.pdfIn PDF document text
    • https://kaxojolomo.weebly.com/uploads/1/3/4/8/134885197/9459749.pdfIn PDF document text
    • http://expressvpn.store/katufejobofulusalokuayfnf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476443/normal_603367e682655.pdfIn PDF document text
    • https://wexivupesowapab.weebly.com/uploads/1/3/2/7/132712225/9648112.pdfIn PDF document text
    • https://tovexalo.weebly.com/uploads/1/3/5/3/135348509/4013144.pdfIn PDF document text
    • https://gedibaforajipet.weebly.com/uploads/1/3/0/8/130874683/movenexelufixe.pdfIn PDF document text
    • http://gamukanemafutu.mywebcommunity.org/deziselexo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402707/normal_601ba0b43c1c6.pdfIn PDF document text
    • https://xukanimuwuvam.weebly.com/uploads/1/3/2/6/132696198/3173ca3e272fa.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/sekere.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirajiletumumi.epizy.com/47845269238.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_off0000d8ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EF 5608 bytes
SHA-256: 16e4d74b0b5129a6d1c0765ad645b1fc1930466fda4dbca192848b6f608c5ce1
font_01_sfnt_off0000ec19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC19 10088 bytes
SHA-256: ec76dad94a270a929c6126562eb891fa0850abba80cb18ac1d9932c863844ede