Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3bb7b06f32c5b68…

MALICIOUS

PDF

78.4 KB Created: 2021-02-11 08:41:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c1ce383e3eda74326bdcd1832d07627d SHA-1: fe921ad9b69fd69c99c9c97d1cd95d9b808179ab SHA-256: c3bb7b06f32c5b682753ead61a030c07213001247c8b2760e19b4dd2e70418a0
184 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
  • 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=anglo+american+cataloguing+rules+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4465249/normal_6005005a4f6ad.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/DhhZbG8/54364291362.pdfIn PDF document text
    • http://lnstagrambusiness.com/foetid_bloat_drone_data_sheetfkamd.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/gcDjgJt/house_by_the_sea_in_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_5fd28d0ec2d71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5fd60cb68b8f0.pdfIn PDF document text
    • http://aires.fun/88962828799fg8pp.pdfIn PDF document text
    • http://rebituzugofebo.22web.org/bakery_story_mod_apk_unlimited_gems.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_602355d33b019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393020/normal_5ffe0d739bf1c.pdfIn PDF document text
    • https://cdn.sqhk.co/fusaduxuw/0gcZZha/meter_reading_calculator_kwh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481999/normal_6001a990957c5.pdfIn PDF document text
    • http://thesimplycompleteseries.com/717794165696nuze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404313/normal_60141fbff03e2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaxidos.epizy.com/95882885693.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_off0000f511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF511 5464 bytes
SHA-256: 5f568ac9919a25e1876fb496809257ac0cff154ff864f62b735bfcbed0cb8bdd
font_01_sfnt_off00010796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10796 10476 bytes
SHA-256: 56f0460014a546f1303ac8b4a6f6740657fec6ca256ff35806d4c97642eb179a