Malicious PDF — malware analysis report

Static analysis result for SHA-256 f41a503880ec6842…

MALICIOUS

PDF

74.3 KB Created: 2021-02-19 04:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: faf87aad7393c6414d66e78ec14aae75 SHA-1: 35fb9562af855c004f625427a45eaec797fc700b SHA-256: f41a503880ec6842cf735afd0bfac70abfffeb71dfb300b33f173568bf22e0f5
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://jottigo.ru/123?utm_term=what+is+logic+in+computer+science PDF link annotation
    • http://maykistore.ru/go_viral_digipowerjne44.pdfIn PDF document text
    • http://meetdouche.xyz/danotowizcpu5k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373770/normal_600df444aaad3.pdfIn PDF document text
    • http://sallles.ru/76350050050ff1mf.pdfIn PDF document text
    • http://zuvakaxosamota.22web.org/vovob.pdfIn PDF document text
    • https://cdn.sqhk.co/xonivozew/TuK3TA4/unicorn_pet_bed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380090/normal_5ffca6b130a27.pdfIn PDF document text
    • https://pupifino.weebly.com/uploads/1/3/0/7/130776741/51a858bcaccb.pdfIn PDF document text
    • http://wolotalute.iblogger.org/fannie_mae_borrower_signature_authorization_form.pdfIn PDF document text
    • http://grusha.space/my_btc_wallet_12hbxz7mzn3lgt3sjcss6ys4tvefpbwcptz2wwq.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/ififshf/27834812783.pdfIn PDF document text
    • https://xalidanazate.weebly.com/uploads/1/3/6/0/136082238/2871494.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/8816994.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469630/normal_5fc86b3354da1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499285/normal_60219ecd34aeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B3 5360 bytes
SHA-256: f67574ff994764829883083505de9720ec8ee88a4d48f732e39cbbf84ec97769
font_01_sfnt_off0000f8d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D1 10428 bytes
SHA-256: 729ec57774d72c60549f5615d57e5dfa7c685de433e9119d1a5e60cf9ab31f74