Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c639b5dc65c2fa…

MALICIOUS

PDF

65.5 KB Created: 2021-02-18 08:36:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b5b497ca6f192d7054988599436f7ae SHA-1: b98f5a257528cb4ed61824abdd4035afbafd2e42 SHA-256: 96c639b5dc65c2fad7dc75a6ef8bea077a08c1ba2d47d4e1d903cd33a782df7c
126 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
  • 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://bologen.ru/wix?keyword=prendimiento+de+anto%25C3%25B1ito+el+camborio+comprensi%25C3%25B3n PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4458856/normal_5fdd6993b34a0.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/h0Rgfpo/kikarikujexivalesojakig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486983/normal_601b425b46d43.pdfIn PDF document text
    • http://irisca.online/213763469046nvwy.pdfIn PDF document text
    • https://cdn.sqhk.co/jesovolavig/5hcSicn/okra_planting_season.pdfIn PDF document text
    • https://cdn.sqhk.co/taranumota/vggqaVt/21233641350.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/giEjefj/startup_episode_14_recap.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/ggjfnhf/memilibejudomape.pdfIn PDF document text
    • http://supportcopyright.net/17453323832pn7h.pdfIn PDF document text
    • https://cdn.sqhk.co/lunapolakezo/jpsjasL/file_hide_android_app_download.pdfIn PDF document text
    • http://durasazi.iblogger.org/how_many_books_in_the_sandman_series.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_60114357257ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387718/normal_5fc8c0d1bdbb2.pdfIn PDF document text
    • http://luminar4-download.xyz/cervical_screening_guidelines_2016nf9wd.pdfIn PDF document text
    • http://lokogosomezik.iblogger.org/fireeye_nx_series_datasheet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424013/normal_5feb003ddf406.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://leniwijob.epizy.com/80709213708.pdfIn PDF document text
    • http://gugawojakopa.rf.gd/renidanivunudede.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_off0000bfa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA6 5708 bytes
SHA-256: 47a17a3071b7c90170ddb610ffb899a6e7501c74634f0d639c4c4d4cf5c4da3f
font_01_sfnt_off0000d268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD268 10952 bytes
SHA-256: 01163470d5dbaf765d2802ac4fa89ebfd6a403c8144baedb2e508932a90496f2