Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cfca66f52465cca…

MALICIOUS

PDF

68.7 KB Created: 2021-02-25 17:39:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 32e0fcaeadec345e088d6a328ebc34b9 SHA-1: 2c99477b6dd32db1b1c441e6f7a4ff49cfe61509 SHA-256: 7cfca66f52465cca8af0f9ed44c5d48a4a2d778a22a8db9513ecd1357d4e578c
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://druttle.ru/wix?keyword=analyzing+the+dust+bowl+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479214/normal_601fde10717fa.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/22033795399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426063/normal_5fd917c7e1818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_6035f819e5d1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379030/normal_602e1e6e76e30.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/what_is_the_septuagint_version_of_the_bible.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491925/normal_6003d3e85f543.pdfIn PDF document text
    • https://cdn.sqhk.co/jiguluzufuwa/jggdjiL/photo_slideshow_with_music_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415527/normal_6009f877d9427.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369764/normal_5ff8fb27bffd7.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/gcZgcjf/fapovakivexikabupowemuro.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/n1996_motherboard_connections.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466664/normal_60254787f4032.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rizivubonulej.atwebpages.com/netgear_readynas_nv_v2_specs.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/45691028756.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_off0000cec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC0 5524 bytes
SHA-256: 4310386ee88f8525463c847f071a3707ea10d9163d06006f1c7305f86fbb22bf
font_01_sfnt_off0000e1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A7 10520 bytes
SHA-256: 7748274bda53831f307b91469bef0689498f8684de7b16a857a6c09af21870f2