Malicious PDF — malware analysis report

Static analysis result for SHA-256 db8d10fe0831f114…

MALICIOUS

PDF

72.6 KB Created: 2021-02-10 21:50:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4c93934c72bf74f880c1a1ff5bb424b2 SHA-1: 9a113847215611c9d8f0a3ecdda5fd1fb157f0ab SHA-256: db8d10fe0831f11425376a8f48de84330c5515a48bee12cc03db8407873b941f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=reading%20eggs%20books%20pdf PDF link annotation
    • http://visionnew.xyz/63439117162cegkg.pdfIn PDF document text
    • https://wozizagozesa.weebly.com/uploads/1/3/4/8/134848764/woxumusabo_wuxajisazaloju.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/failed_to_synchronize_achievements_u6zpou.pdfIn PDF document text
    • http://timecodes.net/evidence_of_evolution_worksheet_middle_schoollofio.pdfIn PDF document text
    • https://lujegasot.weebly.com/uploads/1/3/0/9/130969173/94ad66caa5.pdfIn PDF document text
    • https://werudugin.weebly.com/uploads/1/3/0/8/130873895/307044.pdfIn PDF document text
    • https://nexojavadu.weebly.com/uploads/1/3/0/7/130775828/8474529.pdfIn PDF document text
    • http://paypallsecurity.com/sample_of_partnership_deedmsxpe.pdfIn PDF document text
    • https://galewijukinez.weebly.com/uploads/1/3/2/6/132695540/41f77f20c5c.pdfIn PDF document text
    • http://kismykeitio.best/bateria_virtual_pro_apkwsepc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vozepagejesegi.epizy.com/banda_calypso_antigas.pdfIn PDF document text
    • http://mirapate.rf.gd/ielts_practice_test_2_reading_answers.pdfIn PDF document text
    • http://kiwutixukunow.epizy.com/fake_email_template_ks2.pdfIn PDF document text
    • http://sugosabogakeg.rf.gd/ugly_god_water.pdfIn PDF document text
    • http://doruxexim.epizy.com/taxaxebusujizozus.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_off0000df81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF81 5292 bytes
SHA-256: 5f86922f6221f4a2b2a5e0cf730087f9e8915f2cb93bfc778c7413245b6a2706
font_01_sfnt_off0000f1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A2 10680 bytes
SHA-256: 58d29d139cd0d58d0f44c2afe814a72f5c8346a2e800d8ce19a20026ba2510b4