Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f6820d759d1f47…

MALICIOUS

PDF

70.0 KB Created: 2021-02-26 19:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 30a0d68912e268512f9b1a2fb8a4fba5 SHA-1: 94ad49e7d9b66ce4aa9b7dcecea2adaadb8d1f7a SHA-256: c6f6820d759d1f47dc4883723c44e2dd7a17e4ab3ffa74848cfc7cb7ec110f99
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/wb?keyword=what%20is%20genre%20theory%20in%20writing PDF link annotation
    • https://cdn.sqhk.co/jumivosokigo/ic4aCjR/xarilopolupubijomabenap.pdfIn PDF document text
    • https://cdn.sqhk.co/wirumedaba/0r6t8oe/sports_3d_games_download_for_pc_windows_10.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/44058862359.pdfIn PDF document text
    • https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/fupiledunapok_fefenotiwesutu.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxogubajo/1jie29j/pixasisakeli.pdfIn PDF document text
    • http://meetcabinets.xyz/international_public_relations_definitionf87p3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372072/normal_603138cc1bf42.pdfIn PDF document text
    • http://storeyou.store/el_llano_en_llamas_audiolibro_gratisrfgxr.pdfIn PDF document text
    • https://tedisizizifem.weebly.com/uploads/1/3/4/2/134235801/meburovuzi.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/YSeSFje/lituribekuf.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/foxagafabinedofiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404497/normal_5fdfa87e04a41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445340/normal_6031ec66e57c8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafodix.myartsonline.com/49730462521.pdfIn PDF document text
    • http://petojijoxura.onlinewebshop.net/sundance_optima_850_manual.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_off0000d68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68F 5120 bytes
SHA-256: 5f2b1d9efd8d3a4fd95bc2ec4f7c4f1f860c36fe1f92ccf185f6bb1ec8c4ffc1
font_01_sfnt_off0000e813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE813 10472 bytes
SHA-256: af85e859580c850cae9100cb6cc158ff1f9e2ef3e5cd2df415a992b511e4d305