Malicious PDF — malware analysis report

Static analysis result for SHA-256 7890bd6ee1804fce…

MALICIOUS

PDF

65.9 KB Created: 2021-03-04 22:51:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ae9bf2f0c431dafda495f3a2e22b9ba2 SHA-1: a5f67225d731c801801fcca2da244ae6d43202c1 SHA-256: 7890bd6ee1804fce7a31bf6f26a8662b4bf81f9dde80384549d380703b1d1f1a
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://druttle.ru/wix?keyword=fort+towson+ok+weather PDF link annotation
    • http://floradoma.net/worms_3d_on_steamttxpf.pdfIn PDF document text
    • http://gewututikame.getenjoyment.net/how_much_does_it_cost_to_get_a_cdl_license_in_arkansas.pdfIn PDF document text
    • https://pafetujesotizi.weebly.com/uploads/1/3/5/3/135348857/5269883.pdfIn PDF document text
    • https://bonavipopugob.weebly.com/uploads/1/3/2/3/132302892/pugosaxe.pdfIn PDF document text
    • https://kuvikupomudu.weebly.com/uploads/1/3/4/4/134457818/bagutefow.pdfIn PDF document text
    • https://cdn.sqhk.co/dusaradezat/tibthjM/nugexufidusizorukasa.pdfIn PDF document text
    • https://pulezigo.weebly.com/uploads/1/3/4/6/134600697/jalotida.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/moxaxewemijidexilex.pdfIn PDF document text
    • http://romotogez.22web.org/pekotipiwara.pdfIn PDF document text
    • http://lejifip.sportsontheweb.net/33380647259.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/tNifdgh/classroom_management_theory_essay.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/88275423161.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/oUhbThc/30685252290.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/rejukided.pdfIn PDF document text
    • http://itali-big.space/volkswagen_service_center_navi_mumbai5oqfg.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/zhczUg5/teachers_union_laredo_texas.pdfIn PDF document text
    • http://slmit.space/insurance_certificate_of_completion_template59q0g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tajafex.rf.gd/62732576588.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_off0000c785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC785 4852 bytes
SHA-256: 5d31e398bc430c14e3ff297747e5449c4bc654f895952f8125bfc4a3c24e415d
font_01_sfnt_off0000d814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD814 10152 bytes
SHA-256: 8c1d64dd16565dc4d5a20428f0b5a5de13f7c1bcd267f75913dee5891cab3c30